Home / 21,315.78-29,414.70-11,882.52

Finding the Fourth Proportional to 21,315.78, 29,414.70 and 11,882.52

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Solution

The fourth proportional to 21,315.78, 29,414.70 and 11,882.52 is: 16,397.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.78 : 29,414.70 = 11,882.52 : x
  2. Step 2: Convert to fraction form
    21,315.78/29,414.70 = 11,882.52/x
  3. Step 3: Cross multiply
    21,315.78x = 29,414.70 × 11,882.52
  4. Step 4: Simplify right side
    21,315.78x = 349,520,761.04
  5. Step 5: Solve for x
    x = 349,520,761.04/21,315.78
  6. Step 6: Final answer
    x = 16,397.28

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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.