Home / 19,995.11-29,982.63-6,663.42

Finding the Fourth Proportional to 19,995.11, 29,982.63 and 6,663.42

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Solution

The fourth proportional to 19,995.11, 29,982.63 and 6,663.42 is: 9,991.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.11 : 29,982.63 = 6,663.42 : x
  2. Step 2: Convert to fraction form
    19,995.11/29,982.63 = 6,663.42/x
  3. Step 3: Cross multiply
    19,995.11x = 29,982.63 × 6,663.42
  4. Step 4: Simplify right side
    19,995.11x = 199,786,843.90
  5. Step 5: Solve for x
    x = 199,786,843.90/19,995.11
  6. Step 6: Final answer
    x = 9,991.79

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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.