Home / 15,139.13-20,892.32-8,425.95

Finding the Fourth Proportional to 15,139.13, 20,892.32 and 8,425.95

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Solution

The fourth proportional to 15,139.13, 20,892.32 and 8,425.95 is: 11,627.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.13 : 20,892.32 = 8,425.95 : x
  2. Step 2: Convert to fraction form
    15,139.13/20,892.32 = 8,425.95/x
  3. Step 3: Cross multiply
    15,139.13x = 20,892.32 × 8,425.95
  4. Step 4: Simplify right side
    15,139.13x = 176,037,601.57
  5. Step 5: Solve for x
    x = 176,037,601.57/15,139.13
  6. Step 6: Final answer
    x = 11,627.99

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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.