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Finding the Fourth Proportional to 20,419.44, 30,637.44 and 13,841.88

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Solution

The fourth proportional to 20,419.44, 30,637.44 and 13,841.88 is: 20,768.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.44 : 30,637.44 = 13,841.88 : x
  2. Step 2: Convert to fraction form
    20,419.44/30,637.44 = 13,841.88/x
  3. Step 3: Cross multiply
    20,419.44x = 30,637.44 × 13,841.88
  4. Step 4: Simplify right side
    20,419.44x = 424,079,767.99
  5. Step 5: Solve for x
    x = 424,079,767.99/20,419.44
  6. Step 6: Final answer
    x = 20,768.43

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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.