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Finding the Fourth Proportional to 15,759.33, 21,747.79 and 8,589.24

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Solution

The fourth proportional to 15,759.33, 21,747.79 and 8,589.24 is: 11,853.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,759.33 : 21,747.79 = 8,589.24 : x
  2. Step 2: Convert to fraction form
    15,759.33/21,747.79 = 8,589.24/x
  3. Step 3: Cross multiply
    15,759.33x = 21,747.79 × 8,589.24
  4. Step 4: Simplify right side
    15,759.33x = 186,796,987.78
  5. Step 5: Solve for x
    x = 186,796,987.78/15,759.33
  6. Step 6: Final answer
    x = 11,853.10

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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.