Home / 18,742.97-28,122.23-8,207.55

Finding the Fourth Proportional to 18,742.97, 28,122.23 and 8,207.55

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Solution

The fourth proportional to 18,742.97, 28,122.23 and 8,207.55 is: 12,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.97 : 28,122.23 = 8,207.55 : x
  2. Step 2: Convert to fraction form
    18,742.97/28,122.23 = 8,207.55/x
  3. Step 3: Cross multiply
    18,742.97x = 28,122.23 × 8,207.55
  4. Step 4: Simplify right side
    18,742.97x = 230,814,629.36
  5. Step 5: Solve for x
    x = 230,814,629.36/18,742.97
  6. Step 6: Final answer
    x = 12,314.73

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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.