Home / 12,100.28-18,115.80-8,197.76

Finding the Fourth Proportional to 12,100.28, 18,115.80 and 8,197.76

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Solution

The fourth proportional to 12,100.28, 18,115.80 and 8,197.76 is: 12,273.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100.28 : 18,115.80 = 8,197.76 : x
  2. Step 2: Convert to fraction form
    12,100.28/18,115.80 = 8,197.76/x
  3. Step 3: Cross multiply
    12,100.28x = 18,115.80 × 8,197.76
  4. Step 4: Simplify right side
    12,100.28x = 148,508,980.61
  5. Step 5: Solve for x
    x = 148,508,980.61/12,100.28
  6. Step 6: Final answer
    x = 12,273.19

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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.