Home / 20,701.22-28,577.38-12,200.72

Finding the Fourth Proportional to 20,701.22, 28,577.38 and 12,200.72

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Solution

The fourth proportional to 20,701.22, 28,577.38 and 12,200.72 is: 16,842.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.22 : 28,577.38 = 12,200.72 : x
  2. Step 2: Convert to fraction form
    20,701.22/28,577.38 = 12,200.72/x
  3. Step 3: Cross multiply
    20,701.22x = 28,577.38 × 12,200.72
  4. Step 4: Simplify right side
    20,701.22x = 348,664,611.71
  5. Step 5: Solve for x
    x = 348,664,611.71/20,701.22
  6. Step 6: Final answer
    x = 16,842.71

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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.