Home / 11,529.06-15,889.05-8,379.78

Finding the Fourth Proportional to 11,529.06, 15,889.05 and 8,379.78

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Solution

The fourth proportional to 11,529.06, 15,889.05 and 8,379.78 is: 11,548.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,529.06 : 15,889.05 = 8,379.78 : x
  2. Step 2: Convert to fraction form
    11,529.06/15,889.05 = 8,379.78/x
  3. Step 3: Cross multiply
    11,529.06x = 15,889.05 × 8,379.78
  4. Step 4: Simplify right side
    11,529.06x = 133,146,743.41
  5. Step 5: Solve for x
    x = 133,146,743.41/11,529.06
  6. Step 6: Final answer
    x = 11,548.79

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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.