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Finding the Fourth Proportional to 22,388.88, 30,893.04 and 12,955.44

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Solution

The fourth proportional to 22,388.88, 30,893.04 and 12,955.44 is: 17,876.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,388.88 : 30,893.04 = 12,955.44 : x
  2. Step 2: Convert to fraction form
    22,388.88/30,893.04 = 12,955.44/x
  3. Step 3: Cross multiply
    22,388.88x = 30,893.04 × 12,955.44
  4. Step 4: Simplify right side
    22,388.88x = 400,232,926.14
  5. Step 5: Solve for x
    x = 400,232,926.14/22,388.88
  6. Step 6: Final answer
    x = 17,876.42

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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.