Home / 12,177.20-18,270.72-4,386.56

Finding the Fourth Proportional to 12,177.20, 18,270.72 and 4,386.56

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Solution

The fourth proportional to 12,177.20, 18,270.72 and 4,386.56 is: 6,581.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,177.20 : 18,270.72 = 4,386.56 : x
  2. Step 2: Convert to fraction form
    12,177.20/18,270.72 = 4,386.56/x
  3. Step 3: Cross multiply
    12,177.20x = 18,270.72 × 4,386.56
  4. Step 4: Simplify right side
    12,177.20x = 80,145,609.52
  5. Step 5: Solve for x
    x = 80,145,609.52/12,177.20
  6. Step 6: Final answer
    x = 6,581.61

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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.