Home / 21,770.10-32,654.52-12,945.96

Finding the Fourth Proportional to 21,770.10, 32,654.52 and 12,945.96

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Solution

The fourth proportional to 21,770.10, 32,654.52 and 12,945.96 is: 19,418.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,770.10 : 32,654.52 = 12,945.96 : x
  2. Step 2: Convert to fraction form
    21,770.10/32,654.52 = 12,945.96/x
  3. Step 3: Cross multiply
    21,770.10x = 32,654.52 × 12,945.96
  4. Step 4: Simplify right side
    21,770.10x = 422,744,109.74
  5. Step 5: Solve for x
    x = 422,744,109.74/21,770.10
  6. Step 6: Final answer
    x = 19,418.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.