Home / 21,177.80-31,756.44-6,383.96

Finding the Fourth Proportional to 21,177.80, 31,756.44 and 6,383.96

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Solution

The fourth proportional to 21,177.80, 31,756.44 and 6,383.96 is: 9,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.80 : 31,756.44 = 6,383.96 : x
  2. Step 2: Convert to fraction form
    21,177.80/31,756.44 = 6,383.96/x
  3. Step 3: Cross multiply
    21,177.80x = 31,756.44 × 6,383.96
  4. Step 4: Simplify right side
    21,177.80x = 202,731,842.70
  5. Step 5: Solve for x
    x = 202,731,842.70/21,177.80
  6. Step 6: Final answer
    x = 9,572.85

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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.