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Finding the Fourth Proportional to 21,925.92, 32,881.43 and 7,131.17

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Solution

The fourth proportional to 21,925.92, 32,881.43 and 7,131.17 is: 10,694.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,925.92 : 32,881.43 = 7,131.17 : x
  2. Step 2: Convert to fraction form
    21,925.92/32,881.43 = 7,131.17/x
  3. Step 3: Cross multiply
    21,925.92x = 32,881.43 × 7,131.17
  4. Step 4: Simplify right side
    21,925.92x = 234,482,893.85
  5. Step 5: Solve for x
    x = 234,482,893.85/21,925.92
  6. Step 6: Final answer
    x = 10,694.32

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