Home / 11,986.05-17,985.15-8,082.25

Finding the Fourth Proportional to 11,986.05, 17,985.15 and 8,082.25

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Solution

The fourth proportional to 11,986.05, 17,985.15 and 8,082.25 is: 12,127.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.05 : 17,985.15 = 8,082.25 : x
  2. Step 2: Convert to fraction form
    11,986.05/17,985.15 = 8,082.25/x
  3. Step 3: Cross multiply
    11,986.05x = 17,985.15 × 8,082.25
  4. Step 4: Simplify right side
    11,986.05x = 145,360,478.59
  5. Step 5: Solve for x
    x = 145,360,478.59/11,986.05
  6. Step 6: Final answer
    x = 12,127.47

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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.