Home / 11,280.48-15,550.76-7,912.85

Finding the Fourth Proportional to 11,280.48, 15,550.76 and 7,912.85

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Solution

The fourth proportional to 11,280.48, 15,550.76 and 7,912.85 is: 10,908.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.48 : 15,550.76 = 7,912.85 : x
  2. Step 2: Convert to fraction form
    11,280.48/15,550.76 = 7,912.85/x
  3. Step 3: Cross multiply
    11,280.48x = 15,550.76 × 7,912.85
  4. Step 4: Simplify right side
    11,280.48x = 123,050,713.95
  5. Step 5: Solve for x
    x = 123,050,713.95/11,280.48
  6. Step 6: Final answer
    x = 10,908.29

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Double scale
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Similar ratio
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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.