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Finding the Fourth Proportional to 15,027.57, 20,736.81 and 8,653.82

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Solution

The fourth proportional to 15,027.57, 20,736.81 and 8,653.82 is: 11,941.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.57 : 20,736.81 = 8,653.82 : x
  2. Step 2: Convert to fraction form
    15,027.57/20,736.81 = 8,653.82/x
  3. Step 3: Cross multiply
    15,027.57x = 20,736.81 × 8,653.82
  4. Step 4: Simplify right side
    15,027.57x = 179,452,517.43
  5. Step 5: Solve for x
    x = 179,452,517.43/15,027.57
  6. Step 6: Final answer
    x = 11,941.55

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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.