Home / 15,764.37-21,754.99-8,691.05

Finding the Fourth Proportional to 15,764.37, 21,754.99 and 8,691.05

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Solution

The fourth proportional to 15,764.37, 21,754.99 and 8,691.05 is: 11,993.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.37 : 21,754.99 = 8,691.05 : x
  2. Step 2: Convert to fraction form
    15,764.37/21,754.99 = 8,691.05/x
  3. Step 3: Cross multiply
    15,764.37x = 21,754.99 × 8,691.05
  4. Step 4: Simplify right side
    15,764.37x = 189,073,553.61
  5. Step 5: Solve for x
    x = 189,073,553.61/15,764.37
  6. Step 6: Final answer
    x = 11,993.73

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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.