Home / 18,278.48-27,418.44-8,281.28

Finding the Fourth Proportional to 18,278.48, 27,418.44 and 8,281.28

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Solution

The fourth proportional to 18,278.48, 27,418.44 and 8,281.28 is: 12,422.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.48 : 27,418.44 = 8,281.28 : x
  2. Step 2: Convert to fraction form
    18,278.48/27,418.44 = 8,281.28/x
  3. Step 3: Cross multiply
    18,278.48x = 27,418.44 × 8,281.28
  4. Step 4: Simplify right side
    18,278.48x = 227,059,778.80
  5. Step 5: Solve for x
    x = 227,059,778.80/18,278.48
  6. Step 6: Final answer
    x = 12,422.25

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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.