Home / 11,115.40-16,664.82-3,715.48

Finding the Fourth Proportional to 11,115.40, 16,664.82 and 3,715.48

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Solution

The fourth proportional to 11,115.40, 16,664.82 and 3,715.48 is: 5,570.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.40 : 16,664.82 = 3,715.48 : x
  2. Step 2: Convert to fraction form
    11,115.40/16,664.82 = 3,715.48/x
  3. Step 3: Cross multiply
    11,115.40x = 16,664.82 × 3,715.48
  4. Step 4: Simplify right side
    11,115.40x = 61,917,805.41
  5. Step 5: Solve for x
    x = 61,917,805.41/11,115.40
  6. Step 6: Final answer
    x = 5,570.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.