Home / 20,930.13-28,813.05-18,136.17

Finding the Fourth Proportional to 20,930.13, 28,813.05 and 18,136.17

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Solution

The fourth proportional to 20,930.13, 28,813.05 and 18,136.17 is: 24,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.13 : 28,813.05 = 18,136.17 : x
  2. Step 2: Convert to fraction form
    20,930.13/28,813.05 = 18,136.17/x
  3. Step 3: Cross multiply
    20,930.13x = 28,813.05 × 18,136.17
  4. Step 4: Simplify right side
    20,930.13x = 522,558,373.02
  5. Step 5: Solve for x
    x = 522,558,373.02/20,930.13
  6. Step 6: Final answer
    x = 24,966.80

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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.