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Finding the Fourth Proportional to 11,363.54, 15,678.09 and 8,965.94

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Solution

The fourth proportional to 11,363.54, 15,678.09 and 8,965.94 is: 12,370.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,363.54 : 15,678.09 = 8,965.94 : x
  2. Step 2: Convert to fraction form
    11,363.54/15,678.09 = 8,965.94/x
  3. Step 3: Cross multiply
    11,363.54x = 15,678.09 × 8,965.94
  4. Step 4: Simplify right side
    11,363.54x = 140,568,735.86
  5. Step 5: Solve for x
    x = 140,568,735.86/11,363.54
  6. Step 6: Final answer
    x = 12,370.16

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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.