Home / 14,578.26-20,121.33-8,531.28

Finding the Fourth Proportional to 14,578.26, 20,121.33 and 8,531.28

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Solution

The fourth proportional to 14,578.26, 20,121.33 and 8,531.28 is: 11,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,578.26 : 20,121.33 = 8,531.28 : x
  2. Step 2: Convert to fraction form
    14,578.26/20,121.33 = 8,531.28/x
  3. Step 3: Cross multiply
    14,578.26x = 20,121.33 × 8,531.28
  4. Step 4: Simplify right side
    14,578.26x = 171,660,700.20
  5. Step 5: Solve for x
    x = 171,660,700.20/14,578.26
  6. Step 6: Final answer
    x = 11,775.12

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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.