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Finding the Fourth Proportional to 11,158.90, 16,746.44 and 8,993.78

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Solution

The fourth proportional to 11,158.90, 16,746.44 and 8,993.78 is: 13,497.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.90 : 16,746.44 = 8,993.78 : x
  2. Step 2: Convert to fraction form
    11,158.90/16,746.44 = 8,993.78/x
  3. Step 3: Cross multiply
    11,158.90x = 16,746.44 × 8,993.78
  4. Step 4: Simplify right side
    11,158.90x = 150,613,797.14
  5. Step 5: Solve for x
    x = 150,613,797.14/11,158.90
  6. Step 6: Final answer
    x = 13,497.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.