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Finding the Fourth Proportional to 21,960.38, 32,944.73 and 8,813.79

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Solution

The fourth proportional to 21,960.38, 32,944.73 and 8,813.79 is: 13,222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.38 : 32,944.73 = 8,813.79 : x
  2. Step 2: Convert to fraction form
    21,960.38/32,944.73 = 8,813.79/x
  3. Step 3: Cross multiply
    21,960.38x = 32,944.73 × 8,813.79
  4. Step 4: Simplify right side
    21,960.38x = 290,367,887.76
  5. Step 5: Solve for x
    x = 290,367,887.76/21,960.38
  6. Step 6: Final answer
    x = 13,222.36

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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.