Home / 20,437.20-28,202.43-11,940.11

Finding the Fourth Proportional to 20,437.20, 28,202.43 and 11,940.11

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Solution

The fourth proportional to 20,437.20, 28,202.43 and 11,940.11 is: 16,476.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.20 : 28,202.43 = 11,940.11 : x
  2. Step 2: Convert to fraction form
    20,437.20/28,202.43 = 11,940.11/x
  3. Step 3: Cross multiply
    20,437.20x = 28,202.43 × 11,940.11
  4. Step 4: Simplify right side
    20,437.20x = 336,740,231.75
  5. Step 5: Solve for x
    x = 336,740,231.75/20,437.20
  6. Step 6: Final answer
    x = 16,476.83

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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.