Home / 10,154.25-15,194.45-8,382.78

Finding the Fourth Proportional to 10,154.25, 15,194.45 and 8,382.78

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Solution

The fourth proportional to 10,154.25, 15,194.45 and 8,382.78 is: 12,543.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,154.25 : 15,194.45 = 8,382.78 : x
  2. Step 2: Convert to fraction form
    10,154.25/15,194.45 = 8,382.78/x
  3. Step 3: Cross multiply
    10,154.25x = 15,194.45 × 8,382.78
  4. Step 4: Simplify right side
    10,154.25x = 127,371,731.57
  5. Step 5: Solve for x
    x = 127,371,731.57/10,154.25
  6. Step 6: Final answer
    x = 12,543.69

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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.