Home / 10,519.78-15,769.92-5,521.12

Finding the Fourth Proportional to 10,519.78, 15,769.92 and 5,521.12

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Solution

The fourth proportional to 10,519.78, 15,769.92 and 5,521.12 is: 8,276.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,519.78 : 15,769.92 = 5,521.12 : x
  2. Step 2: Convert to fraction form
    10,519.78/15,769.92 = 5,521.12/x
  3. Step 3: Cross multiply
    10,519.78x = 15,769.92 × 5,521.12
  4. Step 4: Simplify right side
    10,519.78x = 87,067,620.71
  5. Step 5: Solve for x
    x = 87,067,620.71/10,519.78
  6. Step 6: Final answer
    x = 8,276.56

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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.