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Finding the Fourth Proportional to 11,168.92, 15,415.01 and 6,455.94

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Solution

The fourth proportional to 11,168.92, 15,415.01 and 6,455.94 is: 8,910.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,168.92 : 15,415.01 = 6,455.94 : x
  2. Step 2: Convert to fraction form
    11,168.92/15,415.01 = 6,455.94/x
  3. Step 3: Cross multiply
    11,168.92x = 15,415.01 × 6,455.94
  4. Step 4: Simplify right side
    11,168.92x = 99,518,379.66
  5. Step 5: Solve for x
    x = 99,518,379.66/11,168.92
  6. Step 6: Final answer
    x = 8,910.30

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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.