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Finding the Fourth Proportional to 20,452.80, 28,240.80 and 16,492.80

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Solution

The fourth proportional to 20,452.80, 28,240.80 and 16,492.80 is: 22,772.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.80 : 28,240.80 = 16,492.80 : x
  2. Step 2: Convert to fraction form
    20,452.80/28,240.80 = 16,492.80/x
  3. Step 3: Cross multiply
    20,452.80x = 28,240.80 × 16,492.80
  4. Step 4: Simplify right side
    20,452.80x = 465,769,866.24
  5. Step 5: Solve for x
    x = 465,769,866.24/20,452.80
  6. Step 6: Final answer
    x = 22,772.91

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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.