Home / 20,456.82-28,226.88-11,503.62

Finding the Fourth Proportional to 20,456.82, 28,226.88 and 11,503.62

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Solution

The fourth proportional to 20,456.82, 28,226.88 and 11,503.62 is: 15,873.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.82 : 28,226.88 = 11,503.62 : x
  2. Step 2: Convert to fraction form
    20,456.82/28,226.88 = 11,503.62/x
  3. Step 3: Cross multiply
    20,456.82x = 28,226.88 × 11,503.62
  4. Step 4: Simplify right side
    20,456.82x = 324,711,301.31
  5. Step 5: Solve for x
    x = 324,711,301.31/20,456.82
  6. Step 6: Final answer
    x = 15,873.01

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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.