Home / 11,442.36-15,786.87-6,405.90

Finding the Fourth Proportional to 11,442.36, 15,786.87 and 6,405.90

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Solution

The fourth proportional to 11,442.36, 15,786.87 and 6,405.90 is: 8,838.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,442.36 : 15,786.87 = 6,405.90 : x
  2. Step 2: Convert to fraction form
    11,442.36/15,786.87 = 6,405.90/x
  3. Step 3: Cross multiply
    11,442.36x = 15,786.87 × 6,405.90
  4. Step 4: Simplify right side
    11,442.36x = 101,129,110.53
  5. Step 5: Solve for x
    x = 101,129,110.53/11,442.36
  6. Step 6: Final answer
    x = 8,838.13

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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.