Home / 10,891.14-15,022.60-8,649.46

Finding the Fourth Proportional to 10,891.14, 15,022.60 and 8,649.46

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Solution

The fourth proportional to 10,891.14, 15,022.60 and 8,649.46 is: 11,930.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.14 : 15,022.60 = 8,649.46 : x
  2. Step 2: Convert to fraction form
    10,891.14/15,022.60 = 8,649.46/x
  3. Step 3: Cross multiply
    10,891.14x = 15,022.60 × 8,649.46
  4. Step 4: Simplify right side
    10,891.14x = 129,937,377.80
  5. Step 5: Solve for x
    x = 129,937,377.80/10,891.14
  6. Step 6: Final answer
    x = 11,930.56

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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.