Home / 11,366.89-15,687.03-6,399.21

Finding the Fourth Proportional to 11,366.89, 15,687.03 and 6,399.21

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Solution

The fourth proportional to 11,366.89, 15,687.03 and 6,399.21 is: 8,831.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,366.89 : 15,687.03 = 6,399.21 : x
  2. Step 2: Convert to fraction form
    11,366.89/15,687.03 = 6,399.21/x
  3. Step 3: Cross multiply
    11,366.89x = 15,687.03 × 6,399.21
  4. Step 4: Simplify right side
    11,366.89x = 100,384,567.25
  5. Step 5: Solve for x
    x = 100,384,567.25/11,366.89
  6. Step 6: Final answer
    x = 8,831.31

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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.