Home / 18,926.91-28,394.42-5,780.25

Finding the Fourth Proportional to 18,926.91, 28,394.42 and 5,780.25

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Solution

The fourth proportional to 18,926.91, 28,394.42 and 5,780.25 is: 8,671.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.91 : 28,394.42 = 5,780.25 : x
  2. Step 2: Convert to fraction form
    18,926.91/28,394.42 = 5,780.25/x
  3. Step 3: Cross multiply
    18,926.91x = 28,394.42 × 5,780.25
  4. Step 4: Simplify right side
    18,926.91x = 164,126,817.30
  5. Step 5: Solve for x
    x = 164,126,817.30/18,926.91
  6. Step 6: Final answer
    x = 8,671.61

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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.