Home / 10,958.40-15,116.88-8,301.21

Finding the Fourth Proportional to 10,958.40, 15,116.88 and 8,301.21

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Solution

The fourth proportional to 10,958.40, 15,116.88 and 8,301.21 is: 11,451.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,958.40 : 15,116.88 = 8,301.21 : x
  2. Step 2: Convert to fraction form
    10,958.40/15,116.88 = 8,301.21/x
  3. Step 3: Cross multiply
    10,958.40x = 15,116.88 × 8,301.21
  4. Step 4: Simplify right side
    10,958.40x = 125,488,395.42
  5. Step 5: Solve for x
    x = 125,488,395.42/10,958.40
  6. Step 6: Final answer
    x = 11,451.34

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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.