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Finding the Fourth Proportional to 28,758.57, 43,098 and 21,732.84

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Solution

The fourth proportional to 28,758.57, 43,098 and 21,732.84 is: 32,569.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,758.57 : 43,098 = 21,732.84 : x
  2. Step 2: Convert to fraction form
    28,758.57/43,098 = 21,732.84/x
  3. Step 3: Cross multiply
    28,758.57x = 43,098 × 21,732.84
  4. Step 4: Simplify right side
    28,758.57x = 936,641,938.32
  5. Step 5: Solve for x
    x = 936,641,938.32/28,758.57
  6. Step 6: Final answer
    x = 32,569.14

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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.