Home / 28,965.26-39,972.04-15,717.26

Finding the Fourth Proportional to 28,965.26, 39,972.04 and 15,717.26

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Solution

The fourth proportional to 28,965.26, 39,972.04 and 15,717.26 is: 21,689.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.26 : 39,972.04 = 15,717.26 : x
  2. Step 2: Convert to fraction form
    28,965.26/39,972.04 = 15,717.26/x
  3. Step 3: Cross multiply
    28,965.26x = 39,972.04 × 15,717.26
  4. Step 4: Simplify right side
    28,965.26x = 628,250,945.41
  5. Step 5: Solve for x
    x = 628,250,945.41/28,965.26
  6. Step 6: Final answer
    x = 21,689.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.