Home / 15,184.32-20,954.39-8,470.38

Finding the Fourth Proportional to 15,184.32, 20,954.39 and 8,470.38

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Solution

The fourth proportional to 15,184.32, 20,954.39 and 8,470.38 is: 11,689.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,184.32 : 20,954.39 = 8,470.38 : x
  2. Step 2: Convert to fraction form
    15,184.32/20,954.39 = 8,470.38/x
  3. Step 3: Cross multiply
    15,184.32x = 20,954.39 × 8,470.38
  4. Step 4: Simplify right side
    15,184.32x = 177,491,645.97
  5. Step 5: Solve for x
    x = 177,491,645.97/15,184.32
  6. Step 6: Final answer
    x = 11,689.14

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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.