Home / 20,732.69-28,611.89-11,781.71

Finding the Fourth Proportional to 20,732.69, 28,611.89 and 11,781.71

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Solution

The fourth proportional to 20,732.69, 28,611.89 and 11,781.71 is: 16,259.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.69 : 28,611.89 = 11,781.71 : x
  2. Step 2: Convert to fraction form
    20,732.69/28,611.89 = 11,781.71/x
  3. Step 3: Cross multiply
    20,732.69x = 28,611.89 × 11,781.71
  4. Step 4: Simplify right side
    20,732.69x = 337,096,788.56
  5. Step 5: Solve for x
    x = 337,096,788.56/20,732.69
  6. Step 6: Final answer
    x = 16,259.20

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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.