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Finding the Fourth Proportional to 21,808.44, 30,094.74 and 12,377.88

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Solution

The fourth proportional to 21,808.44, 30,094.74 and 12,377.88 is: 17,080.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.44 : 30,094.74 = 12,377.88 : x
  2. Step 2: Convert to fraction form
    21,808.44/30,094.74 = 12,377.88/x
  3. Step 3: Cross multiply
    21,808.44x = 30,094.74 × 12,377.88
  4. Step 4: Simplify right side
    21,808.44x = 372,509,080.35
  5. Step 5: Solve for x
    x = 372,509,080.35/21,808.44
  6. Step 6: Final answer
    x = 17,080.96

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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.