Home / 21,649.97-29,865.95-13,149.83

Finding the Fourth Proportional to 21,649.97, 29,865.95 and 13,149.83

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Solution

The fourth proportional to 21,649.97, 29,865.95 and 13,149.83 is: 18,140.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649.97 : 29,865.95 = 13,149.83 : x
  2. Step 2: Convert to fraction form
    21,649.97/29,865.95 = 13,149.83/x
  3. Step 3: Cross multiply
    21,649.97x = 29,865.95 × 13,149.83
  4. Step 4: Simplify right side
    21,649.97x = 392,732,165.29
  5. Step 5: Solve for x
    x = 392,732,165.29/21,649.97
  6. Step 6: Final answer
    x = 18,140.08

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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.