Home / 20,713.05-28,590.30-19,654.92

Finding the Fourth Proportional to 20,713.05, 28,590.30 and 19,654.92

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Solution

The fourth proportional to 20,713.05, 28,590.30 and 19,654.92 is: 27,129.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.05 : 28,590.30 = 19,654.92 : x
  2. Step 2: Convert to fraction form
    20,713.05/28,590.30 = 19,654.92/x
  3. Step 3: Cross multiply
    20,713.05x = 28,590.30 × 19,654.92
  4. Step 4: Simplify right side
    20,713.05x = 561,940,059.28
  5. Step 5: Solve for x
    x = 561,940,059.28/20,713.05
  6. Step 6: Final answer
    x = 27,129.76

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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.