Home / 18,988.67-28,488.77-13,452.72

Finding the Fourth Proportional to 18,988.67, 28,488.77 and 13,452.72

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Solution

The fourth proportional to 18,988.67, 28,488.77 and 13,452.72 is: 20,183.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.67 : 28,488.77 = 13,452.72 : x
  2. Step 2: Convert to fraction form
    18,988.67/28,488.77 = 13,452.72/x
  3. Step 3: Cross multiply
    18,988.67x = 28,488.77 × 13,452.72
  4. Step 4: Simplify right side
    18,988.67x = 383,251,378.69
  5. Step 5: Solve for x
    x = 383,251,378.69/18,988.67
  6. Step 6: Final answer
    x = 20,183.17

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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.