Home / 11,253.90-15,540.75-7,538.70

Finding the Fourth Proportional to 11,253.90, 15,540.75 and 7,538.70

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Solution

The fourth proportional to 11,253.90, 15,540.75 and 7,538.70 is: 10,410.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,253.90 : 15,540.75 = 7,538.70 : x
  2. Step 2: Convert to fraction form
    11,253.90/15,540.75 = 7,538.70/x
  3. Step 3: Cross multiply
    11,253.90x = 15,540.75 × 7,538.70
  4. Step 4: Simplify right side
    11,253.90x = 117,157,052.03
  5. Step 5: Solve for x
    x = 117,157,052.03/11,253.90
  6. Step 6: Final answer
    x = 10,410.35

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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.