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Finding the Fourth Proportional to 20,107, 30,194.52 and 13,098.88

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Solution

The fourth proportional to 20,107, 30,194.52 and 13,098.88 is: 19,670.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107 : 30,194.52 = 13,098.88 : x
  2. Step 2: Convert to fraction form
    20,107/30,194.52 = 13,098.88/x
  3. Step 3: Cross multiply
    20,107x = 30,194.52 × 13,098.88
  4. Step 4: Simplify right side
    20,107x = 395,514,394.14
  5. Step 5: Solve for x
    x = 395,514,394.14/20,107
  6. Step 6: Final answer
    x = 19,670.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.