Home / 11,126.60-16,689.90-7,408.70

Finding the Fourth Proportional to 11,126.60, 16,689.90 and 7,408.70

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Solution

The fourth proportional to 11,126.60, 16,689.90 and 7,408.70 is: 11,113.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,126.60 : 16,689.90 = 7,408.70 : x
  2. Step 2: Convert to fraction form
    11,126.60/16,689.90 = 7,408.70/x
  3. Step 3: Cross multiply
    11,126.60x = 16,689.90 × 7,408.70
  4. Step 4: Simplify right side
    11,126.60x = 123,650,462.13
  5. Step 5: Solve for x
    x = 123,650,462.13/11,126.60
  6. Step 6: Final answer
    x = 11,113.05

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.