Home / 13,381.59-20,062.45-8,117.76

Finding the Fourth Proportional to 13,381.59, 20,062.45 and 8,117.76

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Solution

The fourth proportional to 13,381.59, 20,062.45 and 8,117.76 is: 12,170.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.59 : 20,062.45 = 8,117.76 : x
  2. Step 2: Convert to fraction form
    13,381.59/20,062.45 = 8,117.76/x
  3. Step 3: Cross multiply
    13,381.59x = 20,062.45 × 8,117.76
  4. Step 4: Simplify right side
    13,381.59x = 162,862,154.11
  5. Step 5: Solve for x
    x = 162,862,154.11/13,381.59
  6. Step 6: Final answer
    x = 12,170.61

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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.