Home / 11,986.20-17,983.62-5,407.38

Finding the Fourth Proportional to 11,986.20, 17,983.62 and 5,407.38

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Solution

The fourth proportional to 11,986.20, 17,983.62 and 5,407.38 is: 8,113.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.20 : 17,983.62 = 5,407.38 : x
  2. Step 2: Convert to fraction form
    11,986.20/17,983.62 = 5,407.38/x
  3. Step 3: Cross multiply
    11,986.20x = 17,983.62 × 5,407.38
  4. Step 4: Simplify right side
    11,986.20x = 97,244,267.12
  5. Step 5: Solve for x
    x = 97,244,267.12/11,986.20
  6. Step 6: Final answer
    x = 8,113.02

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1.5x scale

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.