Home / 15,769.20-21,761.64-8,695.44

Finding the Fourth Proportional to 15,769.20, 21,761.64 and 8,695.44

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Solution

The fourth proportional to 15,769.20, 21,761.64 and 8,695.44 is: 11,999.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.20 : 21,761.64 = 8,695.44 : x
  2. Step 2: Convert to fraction form
    15,769.20/21,761.64 = 8,695.44/x
  3. Step 3: Cross multiply
    15,769.20x = 21,761.64 × 8,695.44
  4. Step 4: Simplify right side
    15,769.20x = 189,227,034.92
  5. Step 5: Solve for x
    x = 189,227,034.92/15,769.20
  6. Step 6: Final answer
    x = 11,999.79

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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.