Home / 11,190.60-15,442.92-6,474.78

Finding the Fourth Proportional to 11,190.60, 15,442.92 and 6,474.78

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Solution

The fourth proportional to 11,190.60, 15,442.92 and 6,474.78 is: 8,935.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.60 : 15,442.92 = 6,474.78 : x
  2. Step 2: Convert to fraction form
    11,190.60/15,442.92 = 6,474.78/x
  3. Step 3: Cross multiply
    11,190.60x = 15,442.92 × 6,474.78
  4. Step 4: Simplify right side
    11,190.60x = 99,989,509.56
  5. Step 5: Solve for x
    x = 99,989,509.56/11,190.60
  6. Step 6: Final answer
    x = 8,935.13

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Double scale
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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.