Home / 28,921.62-39,904.59-18,168.18

Finding the Fourth Proportional to 28,921.62, 39,904.59 and 18,168.18

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Solution

The fourth proportional to 28,921.62, 39,904.59 and 18,168.18 is: 25,067.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.62 : 39,904.59 = 18,168.18 : x
  2. Step 2: Convert to fraction form
    28,921.62/39,904.59 = 18,168.18/x
  3. Step 3: Cross multiply
    28,921.62x = 39,904.59 × 18,168.18
  4. Step 4: Simplify right side
    28,921.62x = 724,993,773.95
  5. Step 5: Solve for x
    x = 724,993,773.95/28,921.62
  6. Step 6: Final answer
    x = 25,067.54

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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.