Home / 11,131.78-15,363.22-6,352.90

Finding the Fourth Proportional to 11,131.78, 15,363.22 and 6,352.90

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Solution

The fourth proportional to 11,131.78, 15,363.22 and 6,352.90 is: 8,767.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.78 : 15,363.22 = 6,352.90 : x
  2. Step 2: Convert to fraction form
    11,131.78/15,363.22 = 6,352.90/x
  3. Step 3: Cross multiply
    11,131.78x = 15,363.22 × 6,352.90
  4. Step 4: Simplify right side
    11,131.78x = 97,601,000.34
  5. Step 5: Solve for x
    x = 97,601,000.34/11,131.78
  6. Step 6: Final answer
    x = 8,767.78

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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.