Home / 21,335.18-31,990.92-15,414.48

Finding the Fourth Proportional to 21,335.18, 31,990.92 and 15,414.48

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Solution

The fourth proportional to 21,335.18, 31,990.92 and 15,414.48 is: 23,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.18 : 31,990.92 = 15,414.48 : x
  2. Step 2: Convert to fraction form
    21,335.18/31,990.92 = 15,414.48/x
  3. Step 3: Cross multiply
    21,335.18x = 31,990.92 × 15,414.48
  4. Step 4: Simplify right side
    21,335.18x = 493,123,396.52
  5. Step 5: Solve for x
    x = 493,123,396.52/21,335.18
  6. Step 6: Final answer
    x = 23,113.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.