Home / 17,811.88-26,738.52-10,421.64

Finding the Fourth Proportional to 17,811.88, 26,738.52 and 10,421.64

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Solution

The fourth proportional to 17,811.88, 26,738.52 and 10,421.64 is: 15,644.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,811.88 : 26,738.52 = 10,421.64 : x
  2. Step 2: Convert to fraction form
    17,811.88/26,738.52 = 10,421.64/x
  3. Step 3: Cross multiply
    17,811.88x = 26,738.52 × 10,421.64
  4. Step 4: Simplify right side
    17,811.88x = 278,659,249.11
  5. Step 5: Solve for x
    x = 278,659,249.11/17,811.88
  6. Step 6: Final answer
    x = 15,644.57

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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.