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Finding the Fourth Proportional to 20,160.80, 30,241.20 and 16,467.20

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Solution

The fourth proportional to 20,160.80, 30,241.20 and 16,467.20 is: 24,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.80 : 30,241.20 = 16,467.20 : x
  2. Step 2: Convert to fraction form
    20,160.80/30,241.20 = 16,467.20/x
  3. Step 3: Cross multiply
    20,160.80x = 30,241.20 × 16,467.20
  4. Step 4: Simplify right side
    20,160.80x = 497,987,888.64
  5. Step 5: Solve for x
    x = 497,987,888.64/20,160.80
  6. Step 6: Final answer
    x = 24,700.80

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1.5x scale

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.