Home / 20,396.20-28,148.10-11,444.32

Finding the Fourth Proportional to 20,396.20, 28,148.10 and 11,444.32

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Solution

The fourth proportional to 20,396.20, 28,148.10 and 11,444.32 is: 15,793.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.20 : 28,148.10 = 11,444.32 : x
  2. Step 2: Convert to fraction form
    20,396.20/28,148.10 = 11,444.32/x
  3. Step 3: Cross multiply
    20,396.20x = 28,148.10 × 11,444.32
  4. Step 4: Simplify right side
    20,396.20x = 322,135,863.79
  5. Step 5: Solve for x
    x = 322,135,863.79/20,396.20
  6. Step 6: Final answer
    x = 15,793.92

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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.