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Finding the Fourth Proportional to 15,161.23, 20,922.36 and 8,446.73

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Solution

The fourth proportional to 15,161.23, 20,922.36 and 8,446.73 is: 11,656.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,161.23 : 20,922.36 = 8,446.73 : x
  2. Step 2: Convert to fraction form
    15,161.23/20,922.36 = 8,446.73/x
  3. Step 3: Cross multiply
    15,161.23x = 20,922.36 × 8,446.73
  4. Step 4: Simplify right side
    15,161.23x = 176,725,546.51
  5. Step 5: Solve for x
    x = 176,725,546.51/15,161.23
  6. Step 6: Final answer
    x = 11,656.41

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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.