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Finding the Fourth Proportional to 21,487.28, 32,230.91 and 8,348.87

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Solution

The fourth proportional to 21,487.28, 32,230.91 and 8,348.87 is: 12,523.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.28 : 32,230.91 = 8,348.87 : x
  2. Step 2: Convert to fraction form
    21,487.28/32,230.91 = 8,348.87/x
  3. Step 3: Cross multiply
    21,487.28x = 32,230.91 × 8,348.87
  4. Step 4: Simplify right side
    21,487.28x = 269,091,779.02
  5. Step 5: Solve for x
    x = 269,091,779.02/21,487.28
  6. Step 6: Final answer
    x = 12,523.31

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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.