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Finding the Fourth Proportional to 21,052.52, 31,551.44 and 8,558

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Solution

The fourth proportional to 21,052.52, 31,551.44 and 8,558 is: 12,825.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,052.52 : 31,551.44 = 8,558 : x
  2. Step 2: Convert to fraction form
    21,052.52/31,551.44 = 8,558/x
  3. Step 3: Cross multiply
    21,052.52x = 31,551.44 × 8,558
  4. Step 4: Simplify right side
    21,052.52x = 270,017,223.52
  5. Step 5: Solve for x
    x = 270,017,223.52/21,052.52
  6. Step 6: Final answer
    x = 12,825.89

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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.