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Finding the Fourth Proportional to 14,517.79, 20,034.77 and 8,145.79

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Solution

The fourth proportional to 14,517.79, 20,034.77 and 8,145.79 is: 11,241.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,517.79 : 20,034.77 = 8,145.79 : x
  2. Step 2: Convert to fraction form
    14,517.79/20,034.77 = 8,145.79/x
  3. Step 3: Cross multiply
    14,517.79x = 20,034.77 × 8,145.79
  4. Step 4: Simplify right side
    14,517.79x = 163,199,029.12
  5. Step 5: Solve for x
    x = 163,199,029.12/14,517.79
  6. Step 6: Final answer
    x = 11,241.31

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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.