Home / 20,172.61-30,262.17-8,489.17

Finding the Fourth Proportional to 20,172.61, 30,262.17 and 8,489.17

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Solution

The fourth proportional to 20,172.61, 30,262.17 and 8,489.17 is: 12,735.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.61 : 30,262.17 = 8,489.17 : x
  2. Step 2: Convert to fraction form
    20,172.61/30,262.17 = 8,489.17/x
  3. Step 3: Cross multiply
    20,172.61x = 30,262.17 × 8,489.17
  4. Step 4: Simplify right side
    20,172.61x = 256,900,705.70
  5. Step 5: Solve for x
    x = 256,900,705.70/20,172.61
  6. Step 6: Final answer
    x = 12,735.12

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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.