Home / 10,279.80-15,419.70-4,040.10

Finding the Fourth Proportional to 10,279.80, 15,419.70 and 4,040.10

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Solution

The fourth proportional to 10,279.80, 15,419.70 and 4,040.10 is: 6,060.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.80 : 15,419.70 = 4,040.10 : x
  2. Step 2: Convert to fraction form
    10,279.80/15,419.70 = 4,040.10/x
  3. Step 3: Cross multiply
    10,279.80x = 15,419.70 × 4,040.10
  4. Step 4: Simplify right side
    10,279.80x = 62,297,129.97
  5. Step 5: Solve for x
    x = 62,297,129.97/10,279.80
  6. Step 6: Final answer
    x = 6,060.15

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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.