Home / 28,202.39-38,919.30-16,872.36

Finding the Fourth Proportional to 28,202.39, 38,919.30 and 16,872.36

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Solution

The fourth proportional to 28,202.39, 38,919.30 and 16,872.36 is: 23,283.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,202.39 : 38,919.30 = 16,872.36 : x
  2. Step 2: Convert to fraction form
    28,202.39/38,919.30 = 16,872.36/x
  3. Step 3: Cross multiply
    28,202.39x = 38,919.30 × 16,872.36
  4. Step 4: Simplify right side
    28,202.39x = 656,660,440.55
  5. Step 5: Solve for x
    x = 656,660,440.55/28,202.39
  6. Step 6: Final answer
    x = 23,283.86

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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.