Home / 21,171.80-31,747.42-6,377.96

Finding the Fourth Proportional to 21,171.80, 31,747.42 and 6,377.96

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Solution

The fourth proportional to 21,171.80, 31,747.42 and 6,377.96 is: 9,563.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.80 : 31,747.42 = 6,377.96 : x
  2. Step 2: Convert to fraction form
    21,171.80/31,747.42 = 6,377.96/x
  3. Step 3: Cross multiply
    21,171.80x = 31,747.42 × 6,377.96
  4. Step 4: Simplify right side
    21,171.80x = 202,483,774.86
  5. Step 5: Solve for x
    x = 202,483,774.86/21,171.80
  6. Step 6: Final answer
    x = 9,563.84

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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.