Home / 28,174.16-38,906.67-18,120.05

Finding the Fourth Proportional to 28,174.16, 38,906.67 and 18,120.05

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Solution

The fourth proportional to 28,174.16, 38,906.67 and 18,120.05 is: 25,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,174.16 : 38,906.67 = 18,120.05 : x
  2. Step 2: Convert to fraction form
    28,174.16/38,906.67 = 18,120.05/x
  3. Step 3: Cross multiply
    28,174.16x = 38,906.67 × 18,120.05
  4. Step 4: Simplify right side
    28,174.16x = 704,990,805.73
  5. Step 5: Solve for x
    x = 704,990,805.73/28,174.16
  6. Step 6: Final answer
    x = 25,022.60

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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.