Home / 11,347.20-15,626.88-8,198.40

Finding the Fourth Proportional to 11,347.20, 15,626.88 and 8,198.40

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Solution

The fourth proportional to 11,347.20, 15,626.88 and 8,198.40 is: 11,290.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,347.20 : 15,626.88 = 8,198.40 : x
  2. Step 2: Convert to fraction form
    11,347.20/15,626.88 = 8,198.40/x
  3. Step 3: Cross multiply
    11,347.20x = 15,626.88 × 8,198.40
  4. Step 4: Simplify right side
    11,347.20x = 128,115,412.99
  5. Step 5: Solve for x
    x = 128,115,412.99/11,347.20
  6. Step 6: Final answer
    x = 11,290.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.