Home / 28,717.39-39,624.19-16,778.42

Finding the Fourth Proportional to 28,717.39, 39,624.19 and 16,778.42

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Solution

The fourth proportional to 28,717.39, 39,624.19 and 16,778.42 is: 23,150.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,717.39 : 39,624.19 = 16,778.42 : x
  2. Step 2: Convert to fraction form
    28,717.39/39,624.19 = 16,778.42/x
  3. Step 3: Cross multiply
    28,717.39x = 39,624.19 × 16,778.42
  4. Step 4: Simplify right side
    28,717.39x = 664,831,301.98
  5. Step 5: Solve for x
    x = 664,831,301.98/28,717.39
  6. Step 6: Final answer
    x = 23,150.83

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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.