Home / 11,151.62-15,389.22-6,435.90

Finding the Fourth Proportional to 11,151.62, 15,389.22 and 6,435.90

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Solution

The fourth proportional to 11,151.62, 15,389.22 and 6,435.90 is: 8,881.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.62 : 15,389.22 = 6,435.90 : x
  2. Step 2: Convert to fraction form
    11,151.62/15,389.22 = 6,435.90/x
  3. Step 3: Cross multiply
    11,151.62x = 15,389.22 × 6,435.90
  4. Step 4: Simplify right side
    11,151.62x = 99,043,481.00
  5. Step 5: Solve for x
    x = 99,043,481.00/11,151.62
  6. Step 6: Final answer
    x = 8,881.53

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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.