Home / 20,306.67-28,028.28-16,257.69

Finding the Fourth Proportional to 20,306.67, 28,028.28 and 16,257.69

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Solution

The fourth proportional to 20,306.67, 28,028.28 and 16,257.69 is: 22,439.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.67 : 28,028.28 = 16,257.69 : x
  2. Step 2: Convert to fraction form
    20,306.67/28,028.28 = 16,257.69/x
  3. Step 3: Cross multiply
    20,306.67x = 28,028.28 × 16,257.69
  4. Step 4: Simplify right side
    20,306.67x = 455,675,087.47
  5. Step 5: Solve for x
    x = 455,675,087.47/20,306.67
  6. Step 6: Final answer
    x = 22,439.68

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1.5x scale

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.