Home / 11,135.16-15,366.24-6,419.88

Finding the Fourth Proportional to 11,135.16, 15,366.24 and 6,419.88

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Solution

The fourth proportional to 11,135.16, 15,366.24 and 6,419.88 is: 8,859.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.16 : 15,366.24 = 6,419.88 : x
  2. Step 2: Convert to fraction form
    11,135.16/15,366.24 = 6,419.88/x
  3. Step 3: Cross multiply
    11,135.16x = 15,366.24 × 6,419.88
  4. Step 4: Simplify right side
    11,135.16x = 98,649,416.85
  5. Step 5: Solve for x
    x = 98,649,416.85/11,135.16
  6. Step 6: Final answer
    x = 8,859.27

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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.