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Finding the Fourth Proportional to 20,657.67, 28,500.84 and 12,041.88

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Solution

The fourth proportional to 20,657.67, 28,500.84 and 12,041.88 is: 16,613.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.67 : 28,500.84 = 12,041.88 : x
  2. Step 2: Convert to fraction form
    20,657.67/28,500.84 = 12,041.88/x
  3. Step 3: Cross multiply
    20,657.67x = 28,500.84 × 12,041.88
  4. Step 4: Simplify right side
    20,657.67x = 343,203,796.54
  5. Step 5: Solve for x
    x = 343,203,796.54/20,657.67
  6. Step 6: Final answer
    x = 16,613.87

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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.