Home / 11,439.44-15,786.71-6,403.61

Finding the Fourth Proportional to 11,439.44, 15,786.71 and 6,403.61

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Solution

The fourth proportional to 11,439.44, 15,786.71 and 6,403.61 is: 8,837.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.44 : 15,786.71 = 6,403.61 : x
  2. Step 2: Convert to fraction form
    11,439.44/15,786.71 = 6,403.61/x
  3. Step 3: Cross multiply
    11,439.44x = 15,786.71 × 6,403.61
  4. Step 4: Simplify right side
    11,439.44x = 101,091,941.47
  5. Step 5: Solve for x
    x = 101,091,941.47/11,439.44
  6. Step 6: Final answer
    x = 8,837.14

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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.