Home / 20,691.49-28,553.01-11,616.18

Finding the Fourth Proportional to 20,691.49, 28,553.01 and 11,616.18

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Solution

The fourth proportional to 20,691.49, 28,553.01 and 11,616.18 is: 16,029.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,691.49 : 28,553.01 = 11,616.18 : x
  2. Step 2: Convert to fraction form
    20,691.49/28,553.01 = 11,616.18/x
  3. Step 3: Cross multiply
    20,691.49x = 28,553.01 × 11,616.18
  4. Step 4: Simplify right side
    20,691.49x = 331,676,903.70
  5. Step 5: Solve for x
    x = 331,676,903.70/20,691.49
  6. Step 6: Final answer
    x = 16,029.63

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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.