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Finding the Fourth Proportional to 34,906.70, 48,169.83 and 18,991.21

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Solution

The fourth proportional to 34,906.70, 48,169.83 and 18,991.21 is: 26,207.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,906.70 : 48,169.83 = 18,991.21 : x
  2. Step 2: Convert to fraction form
    34,906.70/48,169.83 = 18,991.21/x
  3. Step 3: Cross multiply
    34,906.70x = 48,169.83 × 18,991.21
  4. Step 4: Simplify right side
    34,906.70x = 914,803,357.19
  5. Step 5: Solve for x
    x = 914,803,357.19/34,906.70
  6. Step 6: Final answer
    x = 26,207.10

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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.