Home / 21,178.89-31,769.19-5,596.65

Finding the Fourth Proportional to 21,178.89, 31,769.19 and 5,596.65

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Solution

The fourth proportional to 21,178.89, 31,769.19 and 5,596.65 is: 8,395.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.89 : 31,769.19 = 5,596.65 : x
  2. Step 2: Convert to fraction form
    21,178.89/31,769.19 = 5,596.65/x
  3. Step 3: Cross multiply
    21,178.89x = 31,769.19 × 5,596.65
  4. Step 4: Simplify right side
    21,178.89x = 177,801,037.21
  5. Step 5: Solve for x
    x = 177,801,037.21/21,178.89
  6. Step 6: Final answer
    x = 8,395.20

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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.