Home / 17,618.36-26,431.88-5,138.51

Finding the Fourth Proportional to 17,618.36, 26,431.88 and 5,138.51

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Solution

The fourth proportional to 17,618.36, 26,431.88 and 5,138.51 is: 7,709.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,618.36 : 26,431.88 = 5,138.51 : x
  2. Step 2: Convert to fraction form
    17,618.36/26,431.88 = 5,138.51/x
  3. Step 3: Cross multiply
    17,618.36x = 26,431.88 × 5,138.51
  4. Step 4: Simplify right side
    17,618.36x = 135,820,321.85
  5. Step 5: Solve for x
    x = 135,820,321.85/17,618.36
  6. Step 6: Final answer
    x = 7,709.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.