Home / 11,129.78-15,360.46-6,350.90

Finding the Fourth Proportional to 11,129.78, 15,360.46 and 6,350.90

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Solution

The fourth proportional to 11,129.78, 15,360.46 and 6,350.90 is: 8,765.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.78 : 15,360.46 = 6,350.90 : x
  2. Step 2: Convert to fraction form
    11,129.78/15,360.46 = 6,350.90/x
  3. Step 3: Cross multiply
    11,129.78x = 15,360.46 × 6,350.90
  4. Step 4: Simplify right side
    11,129.78x = 97,552,745.41
  5. Step 5: Solve for x
    x = 97,552,745.41/11,129.78
  6. Step 6: Final answer
    x = 8,765.02

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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.