Home / 10,340.87-15,519.15-7,574.72

Finding the Fourth Proportional to 10,340.87, 15,519.15 and 7,574.72

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Solution

The fourth proportional to 10,340.87, 15,519.15 and 7,574.72 is: 11,367.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,340.87 : 15,519.15 = 7,574.72 : x
  2. Step 2: Convert to fraction form
    10,340.87/15,519.15 = 7,574.72/x
  3. Step 3: Cross multiply
    10,340.87x = 15,519.15 × 7,574.72
  4. Step 4: Simplify right side
    10,340.87x = 117,553,138.29
  5. Step 5: Solve for x
    x = 117,553,138.29/10,340.87
  6. Step 6: Final answer
    x = 11,367.82

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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.