Home / 28,103.73-42,170.16-20,376.33

Finding the Fourth Proportional to 28,103.73, 42,170.16 and 20,376.33

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Solution

The fourth proportional to 28,103.73, 42,170.16 and 20,376.33 is: 30,575.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.73 : 42,170.16 = 20,376.33 : x
  2. Step 2: Convert to fraction form
    28,103.73/42,170.16 = 20,376.33/x
  3. Step 3: Cross multiply
    28,103.73x = 42,170.16 × 20,376.33
  4. Step 4: Simplify right side
    28,103.73x = 859,273,096.31
  5. Step 5: Solve for x
    x = 859,273,096.31/28,103.73
  6. Step 6: Final answer
    x = 30,575.06

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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.