Home / 18,850.53-25,999.31-12,805.43

Finding the Fourth Proportional to 18,850.53, 25,999.31 and 12,805.43

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Solution

The fourth proportional to 18,850.53, 25,999.31 and 12,805.43 is: 17,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,850.53 : 25,999.31 = 12,805.43 : x
  2. Step 2: Convert to fraction form
    18,850.53/25,999.31 = 12,805.43/x
  3. Step 3: Cross multiply
    18,850.53x = 25,999.31 × 12,805.43
  4. Step 4: Simplify right side
    18,850.53x = 332,932,247.24
  5. Step 5: Solve for x
    x = 332,932,247.24/18,850.53
  6. Step 6: Final answer
    x = 17,661.70

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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.