Home / 18,987.52-26,198.78-11,025.64

Finding the Fourth Proportional to 18,987.52, 26,198.78 and 11,025.64

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Solution

The fourth proportional to 18,987.52, 26,198.78 and 11,025.64 is: 15,213.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.52 : 26,198.78 = 11,025.64 : x
  2. Step 2: Convert to fraction form
    18,987.52/26,198.78 = 11,025.64/x
  3. Step 3: Cross multiply
    18,987.52x = 26,198.78 × 11,025.64
  4. Step 4: Simplify right side
    18,987.52x = 288,858,316.72
  5. Step 5: Solve for x
    x = 288,858,316.72/18,987.52
  6. Step 6: Final answer
    x = 15,213.06

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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.