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Finding the Fourth Proportional to 11,167.86, 15,411.09 and 6,451.86

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Solution

The fourth proportional to 11,167.86, 15,411.09 and 6,451.86 is: 8,903.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,167.86 : 15,411.09 = 6,451.86 : x
  2. Step 2: Convert to fraction form
    11,167.86/15,411.09 = 6,451.86/x
  3. Step 3: Cross multiply
    11,167.86x = 15,411.09 × 6,451.86
  4. Step 4: Simplify right side
    11,167.86x = 99,430,195.13
  5. Step 5: Solve for x
    x = 99,430,195.13/11,167.86
  6. Step 6: Final answer
    x = 8,903.25

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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.