Home / 19,773.20-27,289.44-11,815.36

Finding the Fourth Proportional to 19,773.20, 27,289.44 and 11,815.36

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Solution

The fourth proportional to 19,773.20, 27,289.44 and 11,815.36 is: 16,306.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,773.20 : 27,289.44 = 11,815.36 : x
  2. Step 2: Convert to fraction form
    19,773.20/27,289.44 = 11,815.36/x
  3. Step 3: Cross multiply
    19,773.20x = 27,289.44 × 11,815.36
  4. Step 4: Simplify right side
    19,773.20x = 322,434,557.80
  5. Step 5: Solve for x
    x = 322,434,557.80/19,773.20
  6. Step 6: Final answer
    x = 16,306.65

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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.