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Finding the Fourth Proportional to 20,203.96, 30,294.96 and 10,855.12

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Solution

The fourth proportional to 20,203.96, 30,294.96 and 10,855.12 is: 16,276.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.96 : 30,294.96 = 10,855.12 : x
  2. Step 2: Convert to fraction form
    20,203.96/30,294.96 = 10,855.12/x
  3. Step 3: Cross multiply
    20,203.96x = 30,294.96 × 10,855.12
  4. Step 4: Simplify right side
    20,203.96x = 328,855,426.20
  5. Step 5: Solve for x
    x = 328,855,426.20/20,203.96
  6. Step 6: Final answer
    x = 16,276.78

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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.