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Finding the Fourth Proportional to 22,572.90, 31,135.19 and 15,487.02

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Solution

The fourth proportional to 22,572.90, 31,135.19 and 15,487.02 is: 21,361.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,572.90 : 31,135.19 = 15,487.02 : x
  2. Step 2: Convert to fraction form
    22,572.90/31,135.19 = 15,487.02/x
  3. Step 3: Cross multiply
    22,572.90x = 31,135.19 × 15,487.02
  4. Step 4: Simplify right side
    22,572.90x = 482,191,232.80
  5. Step 5: Solve for x
    x = 482,191,232.80/22,572.90
  6. Step 6: Final answer
    x = 21,361.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.