Home / 20,663.83-30,991.09-5,872.42

Finding the Fourth Proportional to 20,663.83, 30,991.09 and 5,872.42

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Solution

The fourth proportional to 20,663.83, 30,991.09 and 5,872.42 is: 8,807.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.83 : 30,991.09 = 5,872.42 : x
  2. Step 2: Convert to fraction form
    20,663.83/30,991.09 = 5,872.42/x
  3. Step 3: Cross multiply
    20,663.83x = 30,991.09 × 5,872.42
  4. Step 4: Simplify right side
    20,663.83x = 181,992,696.74
  5. Step 5: Solve for x
    x = 181,992,696.74/20,663.83
  6. Step 6: Final answer
    x = 8,807.31

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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.