Home / 11,424.20-15,765.30-6,388.43

Finding the Fourth Proportional to 11,424.20, 15,765.30 and 6,388.43

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Solution

The fourth proportional to 11,424.20, 15,765.30 and 6,388.43 is: 8,815.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,424.20 : 15,765.30 = 6,388.43 : x
  2. Step 2: Convert to fraction form
    11,424.20/15,765.30 = 6,388.43/x
  3. Step 3: Cross multiply
    11,424.20x = 15,765.30 × 6,388.43
  4. Step 4: Simplify right side
    11,424.20x = 100,715,436.65
  5. Step 5: Solve for x
    x = 100,715,436.65/11,424.20
  6. Step 6: Final answer
    x = 8,815.98

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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.