Home / 21,241.65-29,321.43-15,951.75

Finding the Fourth Proportional to 21,241.65, 29,321.43 and 15,951.75

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Solution

The fourth proportional to 21,241.65, 29,321.43 and 15,951.75 is: 22,019.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.65 : 29,321.43 = 15,951.75 : x
  2. Step 2: Convert to fraction form
    21,241.65/29,321.43 = 15,951.75/x
  3. Step 3: Cross multiply
    21,241.65x = 29,321.43 × 15,951.75
  4. Step 4: Simplify right side
    21,241.65x = 467,728,121.00
  5. Step 5: Solve for x
    x = 467,728,121.00/21,241.65
  6. Step 6: Final answer
    x = 22,019.39

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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.