Home / 13,587.20-20,334.72-8,119.04

Finding the Fourth Proportional to 13,587.20, 20,334.72 and 8,119.04

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Solution

The fourth proportional to 13,587.20, 20,334.72 and 8,119.04 is: 12,151.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.20 : 20,334.72 = 8,119.04 : x
  2. Step 2: Convert to fraction form
    13,587.20/20,334.72 = 8,119.04/x
  3. Step 3: Cross multiply
    13,587.20x = 20,334.72 × 8,119.04
  4. Step 4: Simplify right side
    13,587.20x = 165,098,405.07
  5. Step 5: Solve for x
    x = 165,098,405.07/13,587.20
  6. Step 6: Final answer
    x = 12,151.02

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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.