Home / 20,701.20-28,567.62-11,269.80

Finding the Fourth Proportional to 20,701.20, 28,567.62 and 11,269.80

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Solution

The fourth proportional to 20,701.20, 28,567.62 and 11,269.80 is: 15,552.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.20 : 28,567.62 = 11,269.80 : x
  2. Step 2: Convert to fraction form
    20,701.20/28,567.62 = 11,269.80/x
  3. Step 3: Cross multiply
    20,701.20x = 28,567.62 × 11,269.80
  4. Step 4: Simplify right side
    20,701.20x = 321,951,363.88
  5. Step 5: Solve for x
    x = 321,951,363.88/20,701.20
  6. Step 6: Final answer
    x = 15,552.30

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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.