Home / 11,988.14-17,990.30-4,197.02

Finding the Fourth Proportional to 11,988.14, 17,990.30 and 4,197.02

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Solution

The fourth proportional to 11,988.14, 17,990.30 and 4,197.02 is: 6,298.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.14 : 17,990.30 = 4,197.02 : x
  2. Step 2: Convert to fraction form
    11,988.14/17,990.30 = 4,197.02/x
  3. Step 3: Cross multiply
    11,988.14x = 17,990.30 × 4,197.02
  4. Step 4: Simplify right side
    11,988.14x = 75,505,648.91
  5. Step 5: Solve for x
    x = 75,505,648.91/11,988.14
  6. Step 6: Final answer
    x = 6,298.36

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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.