Home / 11,439.63-15,786.70-6,404.15

Finding the Fourth Proportional to 11,439.63, 15,786.70 and 6,404.15

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Solution

The fourth proportional to 11,439.63, 15,786.70 and 6,404.15 is: 8,837.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.63 : 15,786.70 = 6,404.15 : x
  2. Step 2: Convert to fraction form
    11,439.63/15,786.70 = 6,404.15/x
  3. Step 3: Cross multiply
    11,439.63x = 15,786.70 × 6,404.15
  4. Step 4: Simplify right side
    11,439.63x = 101,100,418.26
  5. Step 5: Solve for x
    x = 101,100,418.26/11,439.63
  6. Step 6: Final answer
    x = 8,837.73

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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.