Home / 13,661.28-18,853.92-7,995.69

Finding the Fourth Proportional to 13,661.28, 18,853.92 and 7,995.69

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Solution

The fourth proportional to 13,661.28, 18,853.92 and 7,995.69 is: 11,034.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.28 : 18,853.92 = 7,995.69 : x
  2. Step 2: Convert to fraction form
    13,661.28/18,853.92 = 7,995.69/x
  3. Step 3: Cross multiply
    13,661.28x = 18,853.92 × 7,995.69
  4. Step 4: Simplify right side
    13,661.28x = 150,750,099.60
  5. Step 5: Solve for x
    x = 150,750,099.60/13,661.28
  6. Step 6: Final answer
    x = 11,034.84

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Half scale
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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.