Home / 18,512.20-27,768.30-10,217.80

Finding the Fourth Proportional to 18,512.20, 27,768.30 and 10,217.80

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Solution

The fourth proportional to 18,512.20, 27,768.30 and 10,217.80 is: 15,326.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.20 : 27,768.30 = 10,217.80 : x
  2. Step 2: Convert to fraction form
    18,512.20/27,768.30 = 10,217.80/x
  3. Step 3: Cross multiply
    18,512.20x = 27,768.30 × 10,217.80
  4. Step 4: Simplify right side
    18,512.20x = 283,730,935.74
  5. Step 5: Solve for x
    x = 283,730,935.74/18,512.20
  6. Step 6: Final answer
    x = 15,326.70

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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.