Home / 21,456.75-32,185.17-9,144.75

Finding the Fourth Proportional to 21,456.75, 32,185.17 and 9,144.75

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Solution

The fourth proportional to 21,456.75, 32,185.17 and 9,144.75 is: 13,717.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456.75 : 32,185.17 = 9,144.75 : x
  2. Step 2: Convert to fraction form
    21,456.75/32,185.17 = 9,144.75/x
  3. Step 3: Cross multiply
    21,456.75x = 32,185.17 × 9,144.75
  4. Step 4: Simplify right side
    21,456.75x = 294,325,333.36
  5. Step 5: Solve for x
    x = 294,325,333.36/21,456.75
  6. Step 6: Final answer
    x = 13,717.14

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1.5x scale

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.