Home / 18,378.19-25,352.55-12,008.51

Finding the Fourth Proportional to 18,378.19, 25,352.55 and 12,008.51

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Solution

The fourth proportional to 18,378.19, 25,352.55 and 12,008.51 is: 16,565.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.19 : 25,352.55 = 12,008.51 : x
  2. Step 2: Convert to fraction form
    18,378.19/25,352.55 = 12,008.51/x
  3. Step 3: Cross multiply
    18,378.19x = 25,352.55 × 12,008.51
  4. Step 4: Simplify right side
    18,378.19x = 304,446,350.20
  5. Step 5: Solve for x
    x = 304,446,350.20/18,378.19
  6. Step 6: Final answer
    x = 16,565.63

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Half scale
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Double scale
Find fourth proportional to 18,379.19, 25,353.93 and 12,009.51
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.