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Finding the Fourth Proportional to 17,958.72, 26,920.80 and 9,197.76

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Solution

The fourth proportional to 17,958.72, 26,920.80 and 9,197.76 is: 13,787.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,958.72 : 26,920.80 = 9,197.76 : x
  2. Step 2: Convert to fraction form
    17,958.72/26,920.80 = 9,197.76/x
  3. Step 3: Cross multiply
    17,958.72x = 26,920.80 × 9,197.76
  4. Step 4: Simplify right side
    17,958.72x = 247,611,057.41
  5. Step 5: Solve for x
    x = 247,611,057.41/17,958.72
  6. Step 6: Final answer
    x = 13,787.79

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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.