Home / 10,399.80-15,599.76-3,474.28

Finding the Fourth Proportional to 10,399.80, 15,599.76 and 3,474.28

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Solution

The fourth proportional to 10,399.80, 15,599.76 and 3,474.28 is: 5,211.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.80 : 15,599.76 = 3,474.28 : x
  2. Step 2: Convert to fraction form
    10,399.80/15,599.76 = 3,474.28/x
  3. Step 3: Cross multiply
    10,399.80x = 15,599.76 × 3,474.28
  4. Step 4: Simplify right side
    10,399.80x = 54,197,934.17
  5. Step 5: Solve for x
    x = 54,197,934.17/10,399.80
  6. Step 6: Final answer
    x = 5,211.44

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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.