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Finding the Fourth Proportional to 28,169.80, 42,254.70 and 27,910.60

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Solution

The fourth proportional to 28,169.80, 42,254.70 and 27,910.60 is: 41,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,169.80 : 42,254.70 = 27,910.60 : x
  2. Step 2: Convert to fraction form
    28,169.80/42,254.70 = 27,910.60/x
  3. Step 3: Cross multiply
    28,169.80x = 42,254.70 × 27,910.60
  4. Step 4: Simplify right side
    28,169.80x = 1,179,354,029.82
  5. Step 5: Solve for x
    x = 1,179,354,029.82/28,169.80
  6. Step 6: Final answer
    x = 41,865.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.