Home / 18,910.31-28,368.54-5,584.65

Finding the Fourth Proportional to 18,910.31, 28,368.54 and 5,584.65

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Solution

The fourth proportional to 18,910.31, 28,368.54 and 5,584.65 is: 8,377.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.31 : 28,368.54 = 5,584.65 : x
  2. Step 2: Convert to fraction form
    18,910.31/28,368.54 = 5,584.65/x
  3. Step 3: Cross multiply
    18,910.31x = 28,368.54 × 5,584.65
  4. Step 4: Simplify right side
    18,910.31x = 158,428,451.79
  5. Step 5: Solve for x
    x = 158,428,451.79/18,910.31
  6. Step 6: Final answer
    x = 8,377.89

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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.