Home / 11,995.20-17,997.12-5,416.38

Finding the Fourth Proportional to 11,995.20, 17,997.12 and 5,416.38

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Solution

The fourth proportional to 11,995.20, 17,997.12 and 5,416.38 is: 8,126.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,995.20 : 17,997.12 = 5,416.38 : x
  2. Step 2: Convert to fraction form
    11,995.20/17,997.12 = 5,416.38/x
  3. Step 3: Cross multiply
    11,995.20x = 17,997.12 × 5,416.38
  4. Step 4: Simplify right side
    11,995.20x = 97,479,240.83
  5. Step 5: Solve for x
    x = 97,479,240.83/11,995.20
  6. Step 6: Final answer
    x = 8,126.52

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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.