Home / 15,165.39-20,923.31-8,449.73

Finding the Fourth Proportional to 15,165.39, 20,923.31 and 8,449.73

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Solution

The fourth proportional to 15,165.39, 20,923.31 and 8,449.73 is: 11,657.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.39 : 20,923.31 = 8,449.73 : x
  2. Step 2: Convert to fraction form
    15,165.39/20,923.31 = 8,449.73/x
  3. Step 3: Cross multiply
    15,165.39x = 20,923.31 × 8,449.73
  4. Step 4: Simplify right side
    15,165.39x = 176,796,173.34
  5. Step 5: Solve for x
    x = 176,796,173.34/15,165.39
  6. Step 6: Final answer
    x = 11,657.87

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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.