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Finding the Fourth Proportional to 22,999.20, 31,737.52 and 13,570.72

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Solution

The fourth proportional to 22,999.20, 31,737.52 and 13,570.72 is: 18,726.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,999.20 : 31,737.52 = 13,570.72 : x
  2. Step 2: Convert to fraction form
    22,999.20/31,737.52 = 13,570.72/x
  3. Step 3: Cross multiply
    22,999.20x = 31,737.52 × 13,570.72
  4. Step 4: Simplify right side
    22,999.20x = 430,700,997.41
  5. Step 5: Solve for x
    x = 430,700,997.41/22,999.20
  6. Step 6: Final answer
    x = 18,726.78

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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.