Home / 21,233.85-31,974.20-15,726.21

Finding the Fourth Proportional to 21,233.85, 31,974.20 and 15,726.21

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Solution

The fourth proportional to 21,233.85, 31,974.20 and 15,726.21 is: 23,680.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,233.85 : 31,974.20 = 15,726.21 : x
  2. Step 2: Convert to fraction form
    21,233.85/31,974.20 = 15,726.21/x
  3. Step 3: Cross multiply
    21,233.85x = 31,974.20 × 15,726.21
  4. Step 4: Simplify right side
    21,233.85x = 502,832,905.15
  5. Step 5: Solve for x
    x = 502,832,905.15/21,233.85
  6. Step 6: Final answer
    x = 23,680.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.