Home / 10,101.80-15,153.92-5,170.11

Finding the Fourth Proportional to 10,101.80, 15,153.92 and 5,170.11

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Solution

The fourth proportional to 10,101.80, 15,153.92 and 5,170.11 is: 7,755.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,101.80 : 15,153.92 = 5,170.11 : x
  2. Step 2: Convert to fraction form
    10,101.80/15,153.92 = 5,170.11/x
  3. Step 3: Cross multiply
    10,101.80x = 15,153.92 × 5,170.11
  4. Step 4: Simplify right side
    10,101.80x = 78,347,407.48
  5. Step 5: Solve for x
    x = 78,347,407.48/10,101.80
  6. Step 6: Final answer
    x = 7,755.79

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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.