Home / 12,126.24-18,151.68-7,747.20

Finding the Fourth Proportional to 12,126.24, 18,151.68 and 7,747.20

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Solution

The fourth proportional to 12,126.24, 18,151.68 and 7,747.20 is: 11,596.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.24 : 18,151.68 = 7,747.20 : x
  2. Step 2: Convert to fraction form
    12,126.24/18,151.68 = 7,747.20/x
  3. Step 3: Cross multiply
    12,126.24x = 18,151.68 × 7,747.20
  4. Step 4: Simplify right side
    12,126.24x = 140,624,695.30
  5. Step 5: Solve for x
    x = 140,624,695.30/12,126.24
  6. Step 6: Final answer
    x = 11,596.73

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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.