Home / 11,816.88-17,719.08-5,240.20

Finding the Fourth Proportional to 11,816.88, 17,719.08 and 5,240.20

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Solution

The fourth proportional to 11,816.88, 17,719.08 and 5,240.20 is: 7,857.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,816.88 : 17,719.08 = 5,240.20 : x
  2. Step 2: Convert to fraction form
    11,816.88/17,719.08 = 5,240.20/x
  3. Step 3: Cross multiply
    11,816.88x = 17,719.08 × 5,240.20
  4. Step 4: Simplify right side
    11,816.88x = 92,851,523.02
  5. Step 5: Solve for x
    x = 92,851,523.02/11,816.88
  6. Step 6: Final answer
    x = 7,857.53

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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.