Home / 11,120.38-15,346.61-6,406.18

Finding the Fourth Proportional to 11,120.38, 15,346.61 and 6,406.18

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Solution

The fourth proportional to 11,120.38, 15,346.61 and 6,406.18 is: 8,840.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.38 : 15,346.61 = 6,406.18 : x
  2. Step 2: Convert to fraction form
    11,120.38/15,346.61 = 6,406.18/x
  3. Step 3: Cross multiply
    11,120.38x = 15,346.61 × 6,406.18
  4. Step 4: Simplify right side
    11,120.38x = 98,313,146.05
  5. Step 5: Solve for x
    x = 98,313,146.05/11,120.38
  6. Step 6: Final answer
    x = 8,840.81

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Half scale
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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.