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Finding the Fourth Proportional to 18,993.33, 25,982.99 and 18,913.38

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Solution

The fourth proportional to 18,993.33, 25,982.99 and 18,913.38 is: 25,873.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.33 : 25,982.99 = 18,913.38 : x
  2. Step 2: Convert to fraction form
    18,993.33/25,982.99 = 18,913.38/x
  3. Step 3: Cross multiply
    18,993.33x = 25,982.99 × 18,913.38
  4. Step 4: Simplify right side
    18,993.33x = 491,426,068.84
  5. Step 5: Solve for x
    x = 491,426,068.84/18,993.33
  6. Step 6: Final answer
    x = 25,873.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.