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Finding the Fourth Proportional to 22,521, 33,781.23 and 21,150.90

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Solution

The fourth proportional to 22,521, 33,781.23 and 21,150.90 is: 31,726.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,521 : 33,781.23 = 21,150.90 : x
  2. Step 2: Convert to fraction form
    22,521/33,781.23 = 21,150.90/x
  3. Step 3: Cross multiply
    22,521x = 33,781.23 × 21,150.90
  4. Step 4: Simplify right side
    22,521x = 714,503,417.61
  5. Step 5: Solve for x
    x = 714,503,417.61/22,521
  6. Step 6: Final answer
    x = 31,726.10

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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.