Home / 13,487.46-20,179.35-8,221.52

Finding the Fourth Proportional to 13,487.46, 20,179.35 and 8,221.52

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Solution

The fourth proportional to 13,487.46, 20,179.35 and 8,221.52 is: 12,300.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.46 : 20,179.35 = 8,221.52 : x
  2. Step 2: Convert to fraction form
    13,487.46/20,179.35 = 8,221.52/x
  3. Step 3: Cross multiply
    13,487.46x = 20,179.35 × 8,221.52
  4. Step 4: Simplify right side
    13,487.46x = 165,904,929.61
  5. Step 5: Solve for x
    x = 165,904,929.61/13,487.46
  6. Step 6: Final answer
    x = 12,300.68

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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.