Home / 20,481.96-28,269.54-12,099.72

Finding the Fourth Proportional to 20,481.96, 28,269.54 and 12,099.72

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Solution

The fourth proportional to 20,481.96, 28,269.54 and 12,099.72 is: 16,700.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.96 : 28,269.54 = 12,099.72 : x
  2. Step 2: Convert to fraction form
    20,481.96/28,269.54 = 12,099.72/x
  3. Step 3: Cross multiply
    20,481.96x = 28,269.54 × 12,099.72
  4. Step 4: Simplify right side
    20,481.96x = 342,053,518.53
  5. Step 5: Solve for x
    x = 342,053,518.53/20,481.96
  6. Step 6: Final answer
    x = 16,700.23

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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.