Home / 20,397.18-28,147.92-11,444.50

Finding the Fourth Proportional to 20,397.18, 28,147.92 and 11,444.50

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Solution

The fourth proportional to 20,397.18, 28,147.92 and 11,444.50 is: 15,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.18 : 28,147.92 = 11,444.50 : x
  2. Step 2: Convert to fraction form
    20,397.18/28,147.92 = 11,444.50/x
  3. Step 3: Cross multiply
    20,397.18x = 28,147.92 × 11,444.50
  4. Step 4: Simplify right side
    20,397.18x = 322,138,870.44
  5. Step 5: Solve for x
    x = 322,138,870.44/20,397.18
  6. Step 6: Final answer
    x = 15,793.30

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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.