Home / 21,229.89-29,296.62-12,154.95

Finding the Fourth Proportional to 21,229.89, 29,296.62 and 12,154.95

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Solution

The fourth proportional to 21,229.89, 29,296.62 and 12,154.95 is: 16,773.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.89 : 29,296.62 = 12,154.95 : x
  2. Step 2: Convert to fraction form
    21,229.89/29,296.62 = 12,154.95/x
  3. Step 3: Cross multiply
    21,229.89x = 29,296.62 × 12,154.95
  4. Step 4: Simplify right side
    21,229.89x = 356,098,890.49
  5. Step 5: Solve for x
    x = 356,098,890.49/21,229.89
  6. Step 6: Final answer
    x = 16,773.47

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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.