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Finding the Fourth Proportional to 21,487.98, 32,231.56 and 8,834.98

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Solution

The fourth proportional to 21,487.98, 32,231.56 and 8,834.98 is: 13,252.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.98 : 32,231.56 = 8,834.98 : x
  2. Step 2: Convert to fraction form
    21,487.98/32,231.56 = 8,834.98/x
  3. Step 3: Cross multiply
    21,487.98x = 32,231.56 × 8,834.98
  4. Step 4: Simplify right side
    21,487.98x = 284,765,187.97
  5. Step 5: Solve for x
    x = 284,765,187.97/21,487.98
  6. Step 6: Final answer
    x = 13,252.30

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1.5x scale

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.