Home / 9,640.19-13,310.70-8,522.39

Finding the Fourth Proportional to 9,640.19, 13,310.70 and 8,522.39

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Solution

The fourth proportional to 9,640.19, 13,310.70 and 8,522.39 is: 11,767.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,640.19 : 13,310.70 = 8,522.39 : x
  2. Step 2: Convert to fraction form
    9,640.19/13,310.70 = 8,522.39/x
  3. Step 3: Cross multiply
    9,640.19x = 13,310.70 × 8,522.39
  4. Step 4: Simplify right side
    9,640.19x = 113,438,976.57
  5. Step 5: Solve for x
    x = 113,438,976.57/9,640.19
  6. Step 6: Final answer
    x = 11,767.30

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.