Home / 11,112.53-15,344.10-8,765.15

Finding the Fourth Proportional to 11,112.53, 15,344.10 and 8,765.15

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Solution

The fourth proportional to 11,112.53, 15,344.10 and 8,765.15 is: 12,102.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.53 : 15,344.10 = 8,765.15 : x
  2. Step 2: Convert to fraction form
    11,112.53/15,344.10 = 8,765.15/x
  3. Step 3: Cross multiply
    11,112.53x = 15,344.10 × 8,765.15
  4. Step 4: Simplify right side
    11,112.53x = 134,493,261.39
  5. Step 5: Solve for x
    x = 134,493,261.39/11,112.53
  6. Step 6: Final answer
    x = 12,102.85

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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.