Home / 18,743.91-28,115.88-5,605.53

Finding the Fourth Proportional to 18,743.91, 28,115.88 and 5,605.53

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Solution

The fourth proportional to 18,743.91, 28,115.88 and 5,605.53 is: 8,408.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.91 : 28,115.88 = 5,605.53 : x
  2. Step 2: Convert to fraction form
    18,743.91/28,115.88 = 5,605.53/x
  3. Step 3: Cross multiply
    18,743.91x = 28,115.88 × 5,605.53
  4. Step 4: Simplify right side
    18,743.91x = 157,604,408.82
  5. Step 5: Solve for x
    x = 157,604,408.82/18,743.91
  6. Step 6: Final answer
    x = 8,408.30

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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.