Home / 13,115.16-18,105.75-10,198.23

Finding the Fourth Proportional to 13,115.16, 18,105.75 and 10,198.23

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Solution

The fourth proportional to 13,115.16, 18,105.75 and 10,198.23 is: 14,078.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.16 : 18,105.75 = 10,198.23 : x
  2. Step 2: Convert to fraction form
    13,115.16/18,105.75 = 10,198.23/x
  3. Step 3: Cross multiply
    13,115.16x = 18,105.75 × 10,198.23
  4. Step 4: Simplify right side
    13,115.16x = 184,646,602.82
  5. Step 5: Solve for x
    x = 184,646,602.82/13,115.16
  6. Step 6: Final answer
    x = 14,078.87

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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.