Home / 18,520.38-25,557.48-10,565.19

Finding the Fourth Proportional to 18,520.38, 25,557.48 and 10,565.19

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Solution

The fourth proportional to 18,520.38, 25,557.48 and 10,565.19 is: 14,579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.38 : 25,557.48 = 10,565.19 : x
  2. Step 2: Convert to fraction form
    18,520.38/25,557.48 = 10,565.19/x
  3. Step 3: Cross multiply
    18,520.38x = 25,557.48 × 10,565.19
  4. Step 4: Simplify right side
    18,520.38x = 270,019,632.12
  5. Step 5: Solve for x
    x = 270,019,632.12/18,520.38
  6. Step 6: Final answer
    x = 14,579.59

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Find fourth proportional to 9,260.19, 12,778.74 and 5,282.60
Half scale
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Double scale
Find fourth proportional to 18,521.38, 25,558.86 and 10,566.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.