Home / 18,279.22-25,225.11-10,321.78

Finding the Fourth Proportional to 18,279.22, 25,225.11 and 10,321.78

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Solution

The fourth proportional to 18,279.22, 25,225.11 and 10,321.78 is: 14,243.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.22 : 25,225.11 = 10,321.78 : x
  2. Step 2: Convert to fraction form
    18,279.22/25,225.11 = 10,321.78/x
  3. Step 3: Cross multiply
    18,279.22x = 25,225.11 × 10,321.78
  4. Step 4: Simplify right side
    18,279.22x = 260,368,035.90
  5. Step 5: Solve for x
    x = 260,368,035.90/18,279.22
  6. Step 6: Final answer
    x = 14,243.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.