Home / 14,449.20-19,939.80-8,161.56

Finding the Fourth Proportional to 14,449.20, 19,939.80 and 8,161.56

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Solution

The fourth proportional to 14,449.20, 19,939.80 and 8,161.56 is: 11,262.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,449.20 : 19,939.80 = 8,161.56 : x
  2. Step 2: Convert to fraction form
    14,449.20/19,939.80 = 8,161.56/x
  3. Step 3: Cross multiply
    14,449.20x = 19,939.80 × 8,161.56
  4. Step 4: Simplify right side
    14,449.20x = 162,739,874.09
  5. Step 5: Solve for x
    x = 162,739,874.09/14,449.20
  6. Step 6: Final answer
    x = 11,262.90

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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.