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Finding the Fourth Proportional to 17,983.60, 26,917.80 and 9,643.12

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Solution

The fourth proportional to 17,983.60, 26,917.80 and 9,643.12 is: 14,433.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,983.60 : 26,917.80 = 9,643.12 : x
  2. Step 2: Convert to fraction form
    17,983.60/26,917.80 = 9,643.12/x
  3. Step 3: Cross multiply
    17,983.60x = 26,917.80 × 9,643.12
  4. Step 4: Simplify right side
    17,983.60x = 259,571,575.54
  5. Step 5: Solve for x
    x = 259,571,575.54/17,983.60
  6. Step 6: Final answer
    x = 14,433.79

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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.