Home / 12,576.24-18,864.40-3,811.20

Finding the Fourth Proportional to 12,576.24, 18,864.40 and 3,811.20

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Solution

The fourth proportional to 12,576.24, 18,864.40 and 3,811.20 is: 5,716.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.24 : 18,864.40 = 3,811.20 : x
  2. Step 2: Convert to fraction form
    12,576.24/18,864.40 = 3,811.20/x
  3. Step 3: Cross multiply
    12,576.24x = 18,864.40 × 3,811.20
  4. Step 4: Simplify right side
    12,576.24x = 71,896,001.28
  5. Step 5: Solve for x
    x = 71,896,001.28/12,576.24
  6. Step 6: Final answer
    x = 5,716.81

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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.