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Finding the Fourth Proportional to 27,689.80, 41,534.70 and 8,969.80

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Solution

The fourth proportional to 27,689.80, 41,534.70 and 8,969.80 is: 13,454.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,689.80 : 41,534.70 = 8,969.80 : x
  2. Step 2: Convert to fraction form
    27,689.80/41,534.70 = 8,969.80/x
  3. Step 3: Cross multiply
    27,689.80x = 41,534.70 × 8,969.80
  4. Step 4: Simplify right side
    27,689.80x = 372,557,952.06
  5. Step 5: Solve for x
    x = 372,557,952.06/27,689.80
  6. Step 6: Final answer
    x = 13,454.70

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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.