Home / 20,104.11-27,753.20-13,400.91

Finding the Fourth Proportional to 20,104.11, 27,753.20 and 13,400.91

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Solution

The fourth proportional to 20,104.11, 27,753.20 and 13,400.91 is: 18,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.11 : 27,753.20 = 13,400.91 : x
  2. Step 2: Convert to fraction form
    20,104.11/27,753.20 = 13,400.91/x
  3. Step 3: Cross multiply
    20,104.11x = 27,753.20 × 13,400.91
  4. Step 4: Simplify right side
    20,104.11x = 371,918,068.41
  5. Step 5: Solve for x
    x = 371,918,068.41/20,104.11
  6. Step 6: Final answer
    x = 18,499.60

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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.