Home / 11,125.60-16,688.40-7,407.70

Finding the Fourth Proportional to 11,125.60, 16,688.40 and 7,407.70

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Solution

The fourth proportional to 11,125.60, 16,688.40 and 7,407.70 is: 11,111.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.60 : 16,688.40 = 7,407.70 : x
  2. Step 2: Convert to fraction form
    11,125.60/16,688.40 = 7,407.70/x
  3. Step 3: Cross multiply
    11,125.60x = 16,688.40 × 7,407.70
  4. Step 4: Simplify right side
    11,125.60x = 123,622,660.68
  5. Step 5: Solve for x
    x = 123,622,660.68/11,125.60
  6. Step 6: Final answer
    x = 11,111.55

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.