Home / 15,146.76-20,902.68-8,862.78

Finding the Fourth Proportional to 15,146.76, 20,902.68 and 8,862.78

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Solution

The fourth proportional to 15,146.76, 20,902.68 and 8,862.78 is: 12,230.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,146.76 : 20,902.68 = 8,862.78 : x
  2. Step 2: Convert to fraction form
    15,146.76/20,902.68 = 8,862.78/x
  3. Step 3: Cross multiply
    15,146.76x = 20,902.68 × 8,862.78
  4. Step 4: Simplify right side
    15,146.76x = 185,255,854.25
  5. Step 5: Solve for x
    x = 185,255,854.25/15,146.76
  6. Step 6: Final answer
    x = 12,230.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.