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Finding the Fourth Proportional to 13,302.78, 19,960.91 and 8,863.48

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Solution

The fourth proportional to 13,302.78, 19,960.91 and 8,863.48 is: 13,299.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,302.78 : 19,960.91 = 8,863.48 : x
  2. Step 2: Convert to fraction form
    13,302.78/19,960.91 = 8,863.48/x
  3. Step 3: Cross multiply
    13,302.78x = 19,960.91 × 8,863.48
  4. Step 4: Simplify right side
    13,302.78x = 176,923,126.57
  5. Step 5: Solve for x
    x = 176,923,126.57/13,302.78
  6. Step 6: Final answer
    x = 13,299.71

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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.