Home / 18,987.86-26,198.78-11,025.36

Finding the Fourth Proportional to 18,987.86, 26,198.78 and 11,025.36

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Solution

The fourth proportional to 18,987.86, 26,198.78 and 11,025.36 is: 15,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.86 : 26,198.78 = 11,025.36 : x
  2. Step 2: Convert to fraction form
    18,987.86/26,198.78 = 11,025.36/x
  3. Step 3: Cross multiply
    18,987.86x = 26,198.78 × 11,025.36
  4. Step 4: Simplify right side
    18,987.86x = 288,850,925.93
  5. Step 5: Solve for x
    x = 288,850,925.93/18,987.86
  6. Step 6: Final answer
    x = 15,212.40

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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.