Home / 28,197.70-38,911.01-15,450.73

Finding the Fourth Proportional to 28,197.70, 38,911.01 and 15,450.73

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Solution

The fourth proportional to 28,197.70, 38,911.01 and 15,450.73 is: 21,321.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,197.70 : 38,911.01 = 15,450.73 : x
  2. Step 2: Convert to fraction form
    28,197.70/38,911.01 = 15,450.73/x
  3. Step 3: Cross multiply
    28,197.70x = 38,911.01 × 15,450.73
  4. Step 4: Simplify right side
    28,197.70x = 601,203,450.89
  5. Step 5: Solve for x
    x = 601,203,450.89/28,197.70
  6. Step 6: Final answer
    x = 21,321.01

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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.