Home / 21,151.96-29,123.28-17,958.58

Finding the Fourth Proportional to 21,151.96, 29,123.28 and 17,958.58

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Solution

The fourth proportional to 21,151.96, 29,123.28 and 17,958.58 is: 24,726.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.96 : 29,123.28 = 17,958.58 : x
  2. Step 2: Convert to fraction form
    21,151.96/29,123.28 = 17,958.58/x
  3. Step 3: Cross multiply
    21,151.96x = 29,123.28 × 17,958.58
  4. Step 4: Simplify right side
    21,151.96x = 523,012,753.74
  5. Step 5: Solve for x
    x = 523,012,753.74/21,151.96
  6. Step 6: Final answer
    x = 24,726.44

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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.