Home / 11,409.29-15,744.45-6,629.64

Finding the Fourth Proportional to 11,409.29, 15,744.45 and 6,629.64

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Solution

The fourth proportional to 11,409.29, 15,744.45 and 6,629.64 is: 9,148.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,409.29 : 15,744.45 = 6,629.64 : x
  2. Step 2: Convert to fraction form
    11,409.29/15,744.45 = 6,629.64/x
  3. Step 3: Cross multiply
    11,409.29x = 15,744.45 × 6,629.64
  4. Step 4: Simplify right side
    11,409.29x = 104,380,001.32
  5. Step 5: Solve for x
    x = 104,380,001.32/11,409.29
  6. Step 6: Final answer
    x = 9,148.69

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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.