Home / 21,432.74-32,138.57-8,949.02

Finding the Fourth Proportional to 21,432.74, 32,138.57 and 8,949.02

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Solution

The fourth proportional to 21,432.74, 32,138.57 and 8,949.02 is: 13,419.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.74 : 32,138.57 = 8,949.02 : x
  2. Step 2: Convert to fraction form
    21,432.74/32,138.57 = 8,949.02/x
  3. Step 3: Cross multiply
    21,432.74x = 32,138.57 × 8,949.02
  4. Step 4: Simplify right side
    21,432.74x = 287,608,500.26
  5. Step 5: Solve for x
    x = 287,608,500.26/21,432.74
  6. Step 6: Final answer
    x = 13,419.12

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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.