Home / 28,101.31-38,776.49-16,768.71

Finding the Fourth Proportional to 28,101.31, 38,776.49 and 16,768.71

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Solution

The fourth proportional to 28,101.31, 38,776.49 and 16,768.71 is: 23,138.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.31 : 38,776.49 = 16,768.71 : x
  2. Step 2: Convert to fraction form
    28,101.31/38,776.49 = 16,768.71/x
  3. Step 3: Cross multiply
    28,101.31x = 38,776.49 × 16,768.71
  4. Step 4: Simplify right side
    28,101.31x = 650,231,521.75
  5. Step 5: Solve for x
    x = 650,231,521.75/28,101.31
  6. Step 6: Final answer
    x = 23,138.83

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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.