Home / 45,291.15-67,910.13-13,691.70

Finding the Fourth Proportional to 45,291.15, 67,910.13 and 13,691.70

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Solution

The fourth proportional to 45,291.15, 67,910.13 and 13,691.70 is: 20,529.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,291.15 : 67,910.13 = 13,691.70 : x
  2. Step 2: Convert to fraction form
    45,291.15/67,910.13 = 13,691.70/x
  3. Step 3: Cross multiply
    45,291.15x = 67,910.13 × 13,691.70
  4. Step 4: Simplify right side
    45,291.15x = 929,805,126.92
  5. Step 5: Solve for x
    x = 929,805,126.92/45,291.15
  6. Step 6: Final answer
    x = 20,529.51

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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.