Home / 12,272.76-18,409.92-4,480.56

Finding the Fourth Proportional to 12,272.76, 18,409.92 and 4,480.56

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Solution

The fourth proportional to 12,272.76, 18,409.92 and 4,480.56 is: 6,721.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272.76 : 18,409.92 = 4,480.56 : x
  2. Step 2: Convert to fraction form
    12,272.76/18,409.92 = 4,480.56/x
  3. Step 3: Cross multiply
    12,272.76x = 18,409.92 × 4,480.56
  4. Step 4: Simplify right side
    12,272.76x = 82,486,751.16
  5. Step 5: Solve for x
    x = 82,486,751.16/12,272.76
  6. Step 6: Final answer
    x = 6,721.12

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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.