Home / 20,450.70-28,221.48-13,376.97

Finding the Fourth Proportional to 20,450.70, 28,221.48 and 13,376.97

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Solution

The fourth proportional to 20,450.70, 28,221.48 and 13,376.97 is: 18,459.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.70 : 28,221.48 = 13,376.97 : x
  2. Step 2: Convert to fraction form
    20,450.70/28,221.48 = 13,376.97/x
  3. Step 3: Cross multiply
    20,450.70x = 28,221.48 × 13,376.97
  4. Step 4: Simplify right side
    20,450.70x = 377,517,891.32
  5. Step 5: Solve for x
    x = 377,517,891.32/20,450.70
  6. Step 6: Final answer
    x = 18,459.90

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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.