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Finding the Fourth Proportional to 14,753.25, 20,359.49 and 8,129.25

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Solution

The fourth proportional to 14,753.25, 20,359.49 and 8,129.25 is: 11,218.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,753.25 : 20,359.49 = 8,129.25 : x
  2. Step 2: Convert to fraction form
    14,753.25/20,359.49 = 8,129.25/x
  3. Step 3: Cross multiply
    14,753.25x = 20,359.49 × 8,129.25
  4. Step 4: Simplify right side
    14,753.25x = 165,507,343.44
  5. Step 5: Solve for x
    x = 165,507,343.44/14,753.25
  6. Step 6: Final answer
    x = 11,218.37

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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.