Home / 20,993.41-31,490.12-19,942.26

Finding the Fourth Proportional to 20,993.41, 31,490.12 and 19,942.26

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Solution

The fourth proportional to 20,993.41, 31,490.12 and 19,942.26 is: 29,913.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.41 : 31,490.12 = 19,942.26 : x
  2. Step 2: Convert to fraction form
    20,993.41/31,490.12 = 19,942.26/x
  3. Step 3: Cross multiply
    20,993.41x = 31,490.12 × 19,942.26
  4. Step 4: Simplify right side
    20,993.41x = 627,984,160.47
  5. Step 5: Solve for x
    x = 627,984,160.47/20,993.41
  6. Step 6: Final answer
    x = 29,913.39

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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.