Home / 17,619.12-26,408.52-7,218

Finding the Fourth Proportional to 17,619.12, 26,408.52 and 7,218

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Solution

The fourth proportional to 17,619.12, 26,408.52 and 7,218 is: 10,818.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,619.12 : 26,408.52 = 7,218 : x
  2. Step 2: Convert to fraction form
    17,619.12/26,408.52 = 7,218/x
  3. Step 3: Cross multiply
    17,619.12x = 26,408.52 × 7,218
  4. Step 4: Simplify right side
    17,619.12x = 190,616,697.36
  5. Step 5: Solve for x
    x = 190,616,697.36/17,619.12
  6. Step 6: Final answer
    x = 10,818.74

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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.