Home / 18,520.32-25,557.39-10,565.09

Finding the Fourth Proportional to 18,520.32, 25,557.39 and 10,565.09

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Solution

The fourth proportional to 18,520.32, 25,557.39 and 10,565.09 is: 14,579.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.32 : 25,557.39 = 10,565.09 : x
  2. Step 2: Convert to fraction form
    18,520.32/25,557.39 = 10,565.09/x
  3. Step 3: Cross multiply
    18,520.32x = 25,557.39 × 10,565.09
  4. Step 4: Simplify right side
    18,520.32x = 270,015,997.73
  5. Step 5: Solve for x
    x = 270,015,997.73/18,520.32
  6. Step 6: Final answer
    x = 14,579.45

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Half scale
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Double scale
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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.