Home / 12,126.78-18,179.24-4,330.13

Finding the Fourth Proportional to 12,126.78, 18,179.24 and 4,330.13

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Solution

The fourth proportional to 12,126.78, 18,179.24 and 4,330.13 is: 6,491.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.78 : 18,179.24 = 4,330.13 : x
  2. Step 2: Convert to fraction form
    12,126.78/18,179.24 = 4,330.13/x
  3. Step 3: Cross multiply
    12,126.78x = 18,179.24 × 4,330.13
  4. Step 4: Simplify right side
    12,126.78x = 78,718,359.95
  5. Step 5: Solve for x
    x = 78,718,359.95/12,126.78
  6. Step 6: Final answer
    x = 6,491.28

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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.