Home / 11,439.09-15,786.29-6,403.29

Finding the Fourth Proportional to 11,439.09, 15,786.29 and 6,403.29

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Solution

The fourth proportional to 11,439.09, 15,786.29 and 6,403.29 is: 8,836.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.09 : 15,786.29 = 6,403.29 : x
  2. Step 2: Convert to fraction form
    11,439.09/15,786.29 = 6,403.29/x
  3. Step 3: Cross multiply
    11,439.09x = 15,786.29 × 6,403.29
  4. Step 4: Simplify right side
    11,439.09x = 101,084,149.70
  5. Step 5: Solve for x
    x = 101,084,149.70/11,439.09
  6. Step 6: Final answer
    x = 8,836.73

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1.5x scale

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.