Home / 12,866.28-19,301.27-3,982.39

Finding the Fourth Proportional to 12,866.28, 19,301.27 and 3,982.39

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Solution

The fourth proportional to 12,866.28, 19,301.27 and 3,982.39 is: 5,974.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.28 : 19,301.27 = 3,982.39 : x
  2. Step 2: Convert to fraction form
    12,866.28/19,301.27 = 3,982.39/x
  3. Step 3: Cross multiply
    12,866.28x = 19,301.27 × 3,982.39
  4. Step 4: Simplify right side
    12,866.28x = 76,865,232.13
  5. Step 5: Solve for x
    x = 76,865,232.13/12,866.28
  6. Step 6: Final answer
    x = 5,974.16

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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.