Home / 20,934.96-28,890.32-11,982.61

Finding the Fourth Proportional to 20,934.96, 28,890.32 and 11,982.61

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Solution

The fourth proportional to 20,934.96, 28,890.32 and 11,982.61 is: 16,536.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.96 : 28,890.32 = 11,982.61 : x
  2. Step 2: Convert to fraction form
    20,934.96/28,890.32 = 11,982.61/x
  3. Step 3: Cross multiply
    20,934.96x = 28,890.32 × 11,982.61
  4. Step 4: Simplify right side
    20,934.96x = 346,181,437.34
  5. Step 5: Solve for x
    x = 346,181,437.34/20,934.96
  6. Step 6: Final answer
    x = 16,536.04

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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.