Home / 11,502.72-15,872.40-6,786.96

Finding the Fourth Proportional to 11,502.72, 15,872.40 and 6,786.96

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Solution

The fourth proportional to 11,502.72, 15,872.40 and 6,786.96 is: 9,365.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,502.72 : 15,872.40 = 6,786.96 : x
  2. Step 2: Convert to fraction form
    11,502.72/15,872.40 = 6,786.96/x
  3. Step 3: Cross multiply
    11,502.72x = 15,872.40 × 6,786.96
  4. Step 4: Simplify right side
    11,502.72x = 107,725,343.90
  5. Step 5: Solve for x
    x = 107,725,343.90/11,502.72
  6. Step 6: Final answer
    x = 9,365.21

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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.