Home / 20,902.08-28,842.96-11,949.30

Finding the Fourth Proportional to 20,902.08, 28,842.96 and 11,949.30

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Solution

The fourth proportional to 20,902.08, 28,842.96 and 11,949.30 is: 16,488.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.08 : 28,842.96 = 11,949.30 : x
  2. Step 2: Convert to fraction form
    20,902.08/28,842.96 = 11,949.30/x
  3. Step 3: Cross multiply
    20,902.08x = 28,842.96 × 11,949.30
  4. Step 4: Simplify right side
    20,902.08x = 344,653,181.93
  5. Step 5: Solve for x
    x = 344,653,181.93/20,902.08
  6. Step 6: Final answer
    x = 16,488.94

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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.