Home / 20,932.24-28,876.62-13,374.64

Finding the Fourth Proportional to 20,932.24, 28,876.62 and 13,374.64

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Solution

The fourth proportional to 20,932.24, 28,876.62 and 13,374.64 is: 18,450.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.24 : 28,876.62 = 13,374.64 : x
  2. Step 2: Convert to fraction form
    20,932.24/28,876.62 = 13,374.64/x
  3. Step 3: Cross multiply
    20,932.24x = 28,876.62 × 13,374.64
  4. Step 4: Simplify right side
    20,932.24x = 386,214,396.92
  5. Step 5: Solve for x
    x = 386,214,396.92/20,932.24
  6. Step 6: Final answer
    x = 18,450.70

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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.