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Finding the Fourth Proportional to 12,161.17, 18,249.97 and 4,764.71

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Solution

The fourth proportional to 12,161.17, 18,249.97 and 4,764.71 is: 7,150.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.17 : 18,249.97 = 4,764.71 : x
  2. Step 2: Convert to fraction form
    12,161.17/18,249.97 = 4,764.71/x
  3. Step 3: Cross multiply
    12,161.17x = 18,249.97 × 4,764.71
  4. Step 4: Simplify right side
    12,161.17x = 86,955,814.56
  5. Step 5: Solve for x
    x = 86,955,814.56/12,161.17
  6. Step 6: Final answer
    x = 7,150.28

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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.