Home / 18,198.54-25,111.69-10,643.38

Finding the Fourth Proportional to 18,198.54, 25,111.69 and 10,643.38

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Solution

The fourth proportional to 18,198.54, 25,111.69 and 10,643.38 is: 14,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,198.54 : 25,111.69 = 10,643.38 : x
  2. Step 2: Convert to fraction form
    18,198.54/25,111.69 = 10,643.38/x
  3. Step 3: Cross multiply
    18,198.54x = 25,111.69 × 10,643.38
  4. Step 4: Simplify right side
    18,198.54x = 267,273,169.72
  5. Step 5: Solve for x
    x = 267,273,169.72/18,198.54
  6. Step 6: Final answer
    x = 14,686.52

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Half scale
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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.