Home / 20,242.39-30,517.73-18,815.38

Finding the Fourth Proportional to 20,242.39, 30,517.73 and 18,815.38

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Solution

The fourth proportional to 20,242.39, 30,517.73 and 18,815.38 is: 28,366.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.39 : 30,517.73 = 18,815.38 : x
  2. Step 2: Convert to fraction form
    20,242.39/30,517.73 = 18,815.38/x
  3. Step 3: Cross multiply
    20,242.39x = 30,517.73 × 18,815.38
  4. Step 4: Simplify right side
    20,242.39x = 574,202,643.18
  5. Step 5: Solve for x
    x = 574,202,643.18/20,242.39
  6. Step 6: Final answer
    x = 28,366.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.