Home / 10,976.80-15,155.22-8,454.46

Finding the Fourth Proportional to 10,976.80, 15,155.22 and 8,454.46

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Solution

The fourth proportional to 10,976.80, 15,155.22 and 8,454.46 is: 11,672.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,976.80 : 15,155.22 = 8,454.46 : x
  2. Step 2: Convert to fraction form
    10,976.80/15,155.22 = 8,454.46/x
  3. Step 3: Cross multiply
    10,976.80x = 15,155.22 × 8,454.46
  4. Step 4: Simplify right side
    10,976.80x = 128,129,201.28
  5. Step 5: Solve for x
    x = 128,129,201.28/10,976.80
  6. Step 6: Final answer
    x = 11,672.73

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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.