Home / 13,839.46-20,760.10-5,080.52

Finding the Fourth Proportional to 13,839.46, 20,760.10 and 5,080.52

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Solution

The fourth proportional to 13,839.46, 20,760.10 and 5,080.52 is: 7,621.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.46 : 20,760.10 = 5,080.52 : x
  2. Step 2: Convert to fraction form
    13,839.46/20,760.10 = 5,080.52/x
  3. Step 3: Cross multiply
    13,839.46x = 20,760.10 × 5,080.52
  4. Step 4: Simplify right side
    13,839.46x = 105,472,142.45
  5. Step 5: Solve for x
    x = 105,472,142.45/13,839.46
  6. Step 6: Final answer
    x = 7,621.12

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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.