Home / 11,529.56-15,889.74-8,380.28

Finding the Fourth Proportional to 11,529.56, 15,889.74 and 8,380.28

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Solution

The fourth proportional to 11,529.56, 15,889.74 and 8,380.28 is: 11,549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,529.56 : 15,889.74 = 8,380.28 : x
  2. Step 2: Convert to fraction form
    11,529.56/15,889.74 = 8,380.28/x
  3. Step 3: Cross multiply
    11,529.56x = 15,889.74 × 8,380.28
  4. Step 4: Simplify right side
    11,529.56x = 133,160,470.33
  5. Step 5: Solve for x
    x = 133,160,470.33/11,529.56
  6. Step 6: Final answer
    x = 11,549.48

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Double scale
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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.