Home / 21,099.75-31,660.62-15,304.20

Finding the Fourth Proportional to 21,099.75, 31,660.62 and 15,304.20

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Solution

The fourth proportional to 21,099.75, 31,660.62 and 15,304.20 is: 22,964.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.75 : 31,660.62 = 15,304.20 : x
  2. Step 2: Convert to fraction form
    21,099.75/31,660.62 = 15,304.20/x
  3. Step 3: Cross multiply
    21,099.75x = 31,660.62 × 15,304.20
  4. Step 4: Simplify right side
    21,099.75x = 484,540,460.60
  5. Step 5: Solve for x
    x = 484,540,460.60/21,099.75
  6. Step 6: Final answer
    x = 22,964.27

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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.