Home / 10,015.28-13,820.76-5,538.32

Finding the Fourth Proportional to 10,015.28, 13,820.76 and 5,538.32

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Solution

The fourth proportional to 10,015.28, 13,820.76 and 5,538.32 is: 7,642.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.28 : 13,820.76 = 5,538.32 : x
  2. Step 2: Convert to fraction form
    10,015.28/13,820.76 = 5,538.32/x
  3. Step 3: Cross multiply
    10,015.28x = 13,820.76 × 5,538.32
  4. Step 4: Simplify right side
    10,015.28x = 76,543,791.52
  5. Step 5: Solve for x
    x = 76,543,791.52/10,015.28
  6. Step 6: Final answer
    x = 7,642.70

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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.