Home / 10,279.80-15,410.70-6,982.20

Finding the Fourth Proportional to 10,279.80, 15,410.70 and 6,982.20

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Solution

The fourth proportional to 10,279.80, 15,410.70 and 6,982.20 is: 10,467.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.80 : 15,410.70 = 6,982.20 : x
  2. Step 2: Convert to fraction form
    10,279.80/15,410.70 = 6,982.20/x
  3. Step 3: Cross multiply
    10,279.80x = 15,410.70 × 6,982.20
  4. Step 4: Simplify right side
    10,279.80x = 107,600,589.54
  5. Step 5: Solve for x
    x = 107,600,589.54/10,279.80
  6. Step 6: Final answer
    x = 10,467.19

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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.