Home / 18,515.25-25,551.05-10,131.75

Finding the Fourth Proportional to 18,515.25, 25,551.05 and 10,131.75

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Solution

The fourth proportional to 18,515.25, 25,551.05 and 10,131.75 is: 13,981.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.25 : 25,551.05 = 10,131.75 : x
  2. Step 2: Convert to fraction form
    18,515.25/25,551.05 = 10,131.75/x
  3. Step 3: Cross multiply
    18,515.25x = 25,551.05 × 10,131.75
  4. Step 4: Simplify right side
    18,515.25x = 258,876,850.84
  5. Step 5: Solve for x
    x = 258,876,850.84/18,515.25
  6. Step 6: Final answer
    x = 13,981.82

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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.