Home / 18,768.03-25,899.12-11,218.53

Finding the Fourth Proportional to 18,768.03, 25,899.12 and 11,218.53

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Solution

The fourth proportional to 18,768.03, 25,899.12 and 11,218.53 is: 15,481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.03 : 25,899.12 = 11,218.53 : x
  2. Step 2: Convert to fraction form
    18,768.03/25,899.12 = 11,218.53/x
  3. Step 3: Cross multiply
    18,768.03x = 25,899.12 × 11,218.53
  4. Step 4: Simplify right side
    18,768.03x = 290,550,054.69
  5. Step 5: Solve for x
    x = 290,550,054.69/18,768.03
  6. Step 6: Final answer
    x = 15,481.12

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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.