Home / 20,540.96-28,346.90-12,049.21

Finding the Fourth Proportional to 20,540.96, 28,346.90 and 12,049.21

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Solution

The fourth proportional to 20,540.96, 28,346.90 and 12,049.21 is: 16,628.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.96 : 28,346.90 = 12,049.21 : x
  2. Step 2: Convert to fraction form
    20,540.96/28,346.90 = 12,049.21/x
  3. Step 3: Cross multiply
    20,540.96x = 28,346.90 × 12,049.21
  4. Step 4: Simplify right side
    20,540.96x = 341,557,566.69
  5. Step 5: Solve for x
    x = 341,557,566.69/20,540.96
  6. Step 6: Final answer
    x = 16,628.12

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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.