Home / 16,142.40-22,279.17-13,449.36

Finding the Fourth Proportional to 16,142.40, 22,279.17 and 13,449.36

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Solution

The fourth proportional to 16,142.40, 22,279.17 and 13,449.36 is: 18,562.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,142.40 : 22,279.17 = 13,449.36 : x
  2. Step 2: Convert to fraction form
    16,142.40/22,279.17 = 13,449.36/x
  3. Step 3: Cross multiply
    16,142.40x = 22,279.17 × 13,449.36
  4. Step 4: Simplify right side
    16,142.40x = 299,640,577.83
  5. Step 5: Solve for x
    x = 299,640,577.83/16,142.40
  6. Step 6: Final answer
    x = 18,562.33

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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.