Home / 11,386.29-17,079.56-3,990.75

Finding the Fourth Proportional to 11,386.29, 17,079.56 and 3,990.75

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Solution

The fourth proportional to 11,386.29, 17,079.56 and 3,990.75 is: 5,986.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,386.29 : 17,079.56 = 3,990.75 : x
  2. Step 2: Convert to fraction form
    11,386.29/17,079.56 = 3,990.75/x
  3. Step 3: Cross multiply
    11,386.29x = 17,079.56 × 3,990.75
  4. Step 4: Simplify right side
    11,386.29x = 68,160,254.07
  5. Step 5: Solve for x
    x = 68,160,254.07/11,386.29
  6. Step 6: Final answer
    x = 5,986.17

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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.