Home / 20,600.76-28,442.70-12,219.96

Finding the Fourth Proportional to 20,600.76, 28,442.70 and 12,219.96

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Solution

The fourth proportional to 20,600.76, 28,442.70 and 12,219.96 is: 16,871.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.76 : 28,442.70 = 12,219.96 : x
  2. Step 2: Convert to fraction form
    20,600.76/28,442.70 = 12,219.96/x
  3. Step 3: Cross multiply
    20,600.76x = 28,442.70 × 12,219.96
  4. Step 4: Simplify right side
    20,600.76x = 347,568,656.29
  5. Step 5: Solve for x
    x = 347,568,656.29/20,600.76
  6. Step 6: Final answer
    x = 16,871.64

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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.