Home / 19,757.80-27,273.30-13,478.68

Finding the Fourth Proportional to 19,757.80, 27,273.30 and 13,478.68

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Solution

The fourth proportional to 19,757.80, 27,273.30 and 13,478.68 is: 18,605.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,757.80 : 27,273.30 = 13,478.68 : x
  2. Step 2: Convert to fraction form
    19,757.80/27,273.30 = 13,478.68/x
  3. Step 3: Cross multiply
    19,757.80x = 27,273.30 × 13,478.68
  4. Step 4: Simplify right side
    19,757.80x = 367,608,083.24
  5. Step 5: Solve for x
    x = 367,608,083.24/19,757.80
  6. Step 6: Final answer
    x = 18,605.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.