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Finding the Fourth Proportional to 11,622.57, 17,390.78 and 6,945.12

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Solution

The fourth proportional to 11,622.57, 17,390.78 and 6,945.12 is: 10,391.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,622.57 : 17,390.78 = 6,945.12 : x
  2. Step 2: Convert to fraction form
    11,622.57/17,390.78 = 6,945.12/x
  3. Step 3: Cross multiply
    11,622.57x = 17,390.78 × 6,945.12
  4. Step 4: Simplify right side
    11,622.57x = 120,781,053.99
  5. Step 5: Solve for x
    x = 120,781,053.99/11,622.57
  6. Step 6: Final answer
    x = 10,391.94

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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.