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Finding the Fourth Proportional to 21,675.25, 29,914.28 and 12,244.42

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Solution

The fourth proportional to 21,675.25, 29,914.28 and 12,244.42 is: 16,898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,675.25 : 29,914.28 = 12,244.42 : x
  2. Step 2: Convert to fraction form
    21,675.25/29,914.28 = 12,244.42/x
  3. Step 3: Cross multiply
    21,675.25x = 29,914.28 × 12,244.42
  4. Step 4: Simplify right side
    21,675.25x = 366,283,008.32
  5. Step 5: Solve for x
    x = 366,283,008.32/21,675.25
  6. Step 6: Final answer
    x = 16,898.68

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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.