Home / 28,867.38-39,828.15-16,766.70

Finding the Fourth Proportional to 28,867.38, 39,828.15 and 16,766.70

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Solution

The fourth proportional to 28,867.38, 39,828.15 and 16,766.70 is: 23,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,867.38 : 39,828.15 = 16,766.70 : x
  2. Step 2: Convert to fraction form
    28,867.38/39,828.15 = 16,766.70/x
  3. Step 3: Cross multiply
    28,867.38x = 39,828.15 × 16,766.70
  4. Step 4: Simplify right side
    28,867.38x = 667,786,642.61
  5. Step 5: Solve for x
    x = 667,786,642.61/28,867.38
  6. Step 6: Final answer
    x = 23,132.91

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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.