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Finding the Fourth Proportional to 21,952.57, 32,928.43 and 8,807.89

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Solution

The fourth proportional to 21,952.57, 32,928.43 and 8,807.89 is: 13,211.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952.57 : 32,928.43 = 8,807.89 : x
  2. Step 2: Convert to fraction form
    21,952.57/32,928.43 = 8,807.89/x
  3. Step 3: Cross multiply
    21,952.57x = 32,928.43 × 8,807.89
  4. Step 4: Simplify right side
    21,952.57x = 290,029,989.31
  5. Step 5: Solve for x
    x = 290,029,989.31/21,952.57
  6. Step 6: Final answer
    x = 13,211.66

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Why These Related Problems?

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