Home / 10,105.20-13,945.20-6,125.28

Finding the Fourth Proportional to 10,105.20, 13,945.20 and 6,125.28

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Solution

The fourth proportional to 10,105.20, 13,945.20 and 6,125.28 is: 8,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,105.20 : 13,945.20 = 6,125.28 : x
  2. Step 2: Convert to fraction form
    10,105.20/13,945.20 = 6,125.28/x
  3. Step 3: Cross multiply
    10,105.20x = 13,945.20 × 6,125.28
  4. Step 4: Simplify right side
    10,105.20x = 85,418,254.66
  5. Step 5: Solve for x
    x = 85,418,254.66/10,105.20
  6. Step 6: Final answer
    x = 8,452.90

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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.