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Finding the Fourth Proportional to 13,161.08, 18,162.22 and 7,193.08

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Solution

The fourth proportional to 13,161.08, 18,162.22 and 7,193.08 is: 9,926.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.08 : 18,162.22 = 7,193.08 : x
  2. Step 2: Convert to fraction form
    13,161.08/18,162.22 = 7,193.08/x
  3. Step 3: Cross multiply
    13,161.08x = 18,162.22 × 7,193.08
  4. Step 4: Simplify right side
    13,161.08x = 130,642,301.44
  5. Step 5: Solve for x
    x = 130,642,301.44/13,161.08
  6. Step 6: Final answer
    x = 9,926.41

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Double scale
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Similar ratio
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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.