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Finding the Fourth Proportional to 22,376.34, 30,879.63 and 12,305.88

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Solution

The fourth proportional to 22,376.34, 30,879.63 and 12,305.88 is: 16,982.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,376.34 : 30,879.63 = 12,305.88 : x
  2. Step 2: Convert to fraction form
    22,376.34/30,879.63 = 12,305.88/x
  3. Step 3: Cross multiply
    22,376.34x = 30,879.63 × 12,305.88
  4. Step 4: Simplify right side
    22,376.34x = 380,001,021.22
  5. Step 5: Solve for x
    x = 380,001,021.22/22,376.34
  6. Step 6: Final answer
    x = 16,982.27

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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.