Home / 11,985.05-17,983.65-8,081.25

Finding the Fourth Proportional to 11,985.05, 17,983.65 and 8,081.25

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Solution

The fourth proportional to 11,985.05, 17,983.65 and 8,081.25 is: 12,125.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.05 : 17,983.65 = 8,081.25 : x
  2. Step 2: Convert to fraction form
    11,985.05/17,983.65 = 8,081.25/x
  3. Step 3: Cross multiply
    11,985.05x = 17,983.65 × 8,081.25
  4. Step 4: Simplify right side
    11,985.05x = 145,330,371.56
  5. Step 5: Solve for x
    x = 145,330,371.56/11,985.05
  6. Step 6: Final answer
    x = 12,125.97

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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.