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Finding the Fourth Proportional to 20,542.56, 28,339.56 and 16,295.28

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Solution

The fourth proportional to 20,542.56, 28,339.56 and 16,295.28 is: 22,480.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.56 : 28,339.56 = 16,295.28 : x
  2. Step 2: Convert to fraction form
    20,542.56/28,339.56 = 16,295.28/x
  3. Step 3: Cross multiply
    20,542.56x = 28,339.56 × 16,295.28
  4. Step 4: Simplify right side
    20,542.56x = 461,801,065.28
  5. Step 5: Solve for x
    x = 461,801,065.28/20,542.56
  6. Step 6: Final answer
    x = 22,480.21

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1.5x scale

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.