Home / 12,240.54-18,360.17-7,177.55

Finding the Fourth Proportional to 12,240.54, 18,360.17 and 7,177.55

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Solution

The fourth proportional to 12,240.54, 18,360.17 and 7,177.55 is: 10,765.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.54 : 18,360.17 = 7,177.55 : x
  2. Step 2: Convert to fraction form
    12,240.54/18,360.17 = 7,177.55/x
  3. Step 3: Cross multiply
    12,240.54x = 18,360.17 × 7,177.55
  4. Step 4: Simplify right side
    12,240.54x = 131,781,038.18
  5. Step 5: Solve for x
    x = 131,781,038.18/12,240.54
  6. Step 6: Final answer
    x = 10,765.95

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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.