Home / 12,272.79-18,414.65-4,479.78

Finding the Fourth Proportional to 12,272.79, 18,414.65 and 4,479.78

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Solution

The fourth proportional to 12,272.79, 18,414.65 and 4,479.78 is: 6,721.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272.79 : 18,414.65 = 4,479.78 : x
  2. Step 2: Convert to fraction form
    12,272.79/18,414.65 = 4,479.78/x
  3. Step 3: Cross multiply
    12,272.79x = 18,414.65 × 4,479.78
  4. Step 4: Simplify right side
    12,272.79x = 82,493,580.78
  5. Step 5: Solve for x
    x = 82,493,580.78/12,272.79
  6. Step 6: Final answer
    x = 6,721.66

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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.