Home / 20,396.85-28,147.49-11,444.36

Finding the Fourth Proportional to 20,396.85, 28,147.49 and 11,444.36

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Solution

The fourth proportional to 20,396.85, 28,147.49 and 11,444.36 is: 15,793.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.85 : 28,147.49 = 11,444.36 : x
  2. Step 2: Convert to fraction form
    20,396.85/28,147.49 = 11,444.36/x
  3. Step 3: Cross multiply
    20,396.85x = 28,147.49 × 11,444.36
  4. Step 4: Simplify right side
    20,396.85x = 322,129,810.70
  5. Step 5: Solve for x
    x = 322,129,810.70/20,396.85
  6. Step 6: Final answer
    x = 15,793.12

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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.