Home / 20,882.41-28,817.71-11,929.73

Finding the Fourth Proportional to 20,882.41, 28,817.71 and 11,929.73

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Solution

The fourth proportional to 20,882.41, 28,817.71 and 11,929.73 is: 16,463.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.41 : 28,817.71 = 11,929.73 : x
  2. Step 2: Convert to fraction form
    20,882.41/28,817.71 = 11,929.73/x
  3. Step 3: Cross multiply
    20,882.41x = 28,817.71 × 11,929.73
  4. Step 4: Simplify right side
    20,882.41x = 343,787,487.71
  5. Step 5: Solve for x
    x = 343,787,487.71/20,882.41
  6. Step 6: Final answer
    x = 16,463.02

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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.