Home / 10,129.75-15,177.20-9,102.56

Finding the Fourth Proportional to 10,129.75, 15,177.20 and 9,102.56

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Solution

The fourth proportional to 10,129.75, 15,177.20 and 9,102.56 is: 13,638.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.75 : 15,177.20 = 9,102.56 : x
  2. Step 2: Convert to fraction form
    10,129.75/15,177.20 = 9,102.56/x
  3. Step 3: Cross multiply
    10,129.75x = 15,177.20 × 9,102.56
  4. Step 4: Simplify right side
    10,129.75x = 138,151,252.23
  5. Step 5: Solve for x
    x = 138,151,252.23/10,129.75
  6. Step 6: Final answer
    x = 13,638.17

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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.