Home / 21,149.82-31,724.77-8,667.52

Finding the Fourth Proportional to 21,149.82, 31,724.77 and 8,667.52

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Solution

The fourth proportional to 21,149.82, 31,724.77 and 8,667.52 is: 13,001.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.82 : 31,724.77 = 8,667.52 : x
  2. Step 2: Convert to fraction form
    21,149.82/31,724.77 = 8,667.52/x
  3. Step 3: Cross multiply
    21,149.82x = 31,724.77 × 8,667.52
  4. Step 4: Simplify right side
    21,149.82x = 274,975,056.80
  5. Step 5: Solve for x
    x = 274,975,056.80/21,149.82
  6. Step 6: Final answer
    x = 13,001.29

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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.