Home / 11,695.92-16,140.97-6,390.75

Finding the Fourth Proportional to 11,695.92, 16,140.97 and 6,390.75

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Solution

The fourth proportional to 11,695.92, 16,140.97 and 6,390.75 is: 8,819.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.92 : 16,140.97 = 6,390.75 : x
  2. Step 2: Convert to fraction form
    11,695.92/16,140.97 = 6,390.75/x
  3. Step 3: Cross multiply
    11,695.92x = 16,140.97 × 6,390.75
  4. Step 4: Simplify right side
    11,695.92x = 103,152,904.03
  5. Step 5: Solve for x
    x = 103,152,904.03/11,695.92
  6. Step 6: Final answer
    x = 8,819.56

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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.