Home / 11,371.40-17,040.90-8,386.55

Finding the Fourth Proportional to 11,371.40, 17,040.90 and 8,386.55

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Solution

The fourth proportional to 11,371.40, 17,040.90 and 8,386.55 is: 12,567.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,371.40 : 17,040.90 = 8,386.55 : x
  2. Step 2: Convert to fraction form
    11,371.40/17,040.90 = 8,386.55/x
  3. Step 3: Cross multiply
    11,371.40x = 17,040.90 × 8,386.55
  4. Step 4: Simplify right side
    11,371.40x = 142,914,359.90
  5. Step 5: Solve for x
    x = 142,914,359.90/11,371.40
  6. Step 6: Final answer
    x = 12,567.88

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.