Home / 21,326.28-31,991.34-5,743.56

Finding the Fourth Proportional to 21,326.28, 31,991.34 and 5,743.56

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Solution

The fourth proportional to 21,326.28, 31,991.34 and 5,743.56 is: 8,615.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.28 : 31,991.34 = 5,743.56 : x
  2. Step 2: Convert to fraction form
    21,326.28/31,991.34 = 5,743.56/x
  3. Step 3: Cross multiply
    21,326.28x = 31,991.34 × 5,743.56
  4. Step 4: Simplify right side
    21,326.28x = 183,744,180.77
  5. Step 5: Solve for x
    x = 183,744,180.77/21,326.28
  6. Step 6: Final answer
    x = 8,615.86

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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.