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Finding the Fourth Proportional to 11,161.66, 16,742.49 and 8,698.32

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Solution

The fourth proportional to 11,161.66, 16,742.49 and 8,698.32 is: 13,047.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.66 : 16,742.49 = 8,698.32 : x
  2. Step 2: Convert to fraction form
    11,161.66/16,742.49 = 8,698.32/x
  3. Step 3: Cross multiply
    11,161.66x = 16,742.49 × 8,698.32
  4. Step 4: Simplify right side
    11,161.66x = 145,631,535.62
  5. Step 5: Solve for x
    x = 145,631,535.62/11,161.66
  6. Step 6: Final answer
    x = 13,047.48

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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.