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Finding the Fourth Proportional to 28,107.66, 38,795.04 and 16,177.90

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Solution

The fourth proportional to 28,107.66, 38,795.04 and 16,177.90 is: 22,329.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.66 : 38,795.04 = 16,177.90 : x
  2. Step 2: Convert to fraction form
    28,107.66/38,795.04 = 16,177.90/x
  3. Step 3: Cross multiply
    28,107.66x = 38,795.04 × 16,177.90
  4. Step 4: Simplify right side
    28,107.66x = 627,622,277.62
  5. Step 5: Solve for x
    x = 627,622,277.62/28,107.66
  6. Step 6: Final answer
    x = 22,329.23

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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.