Home / 18,738.75-25,861.38-10,355.25

Finding the Fourth Proportional to 18,738.75, 25,861.38 and 10,355.25

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Solution

The fourth proportional to 18,738.75, 25,861.38 and 10,355.25 is: 14,291.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.75 : 25,861.38 = 10,355.25 : x
  2. Step 2: Convert to fraction form
    18,738.75/25,861.38 = 10,355.25/x
  3. Step 3: Cross multiply
    18,738.75x = 25,861.38 × 10,355.25
  4. Step 4: Simplify right side
    18,738.75x = 267,801,055.25
  5. Step 5: Solve for x
    x = 267,801,055.25/18,738.75
  6. Step 6: Final answer
    x = 14,291.30

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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.