Home / 9,936.24-13,711.80-6,399.48

Finding the Fourth Proportional to 9,936.24, 13,711.80 and 6,399.48

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Solution

The fourth proportional to 9,936.24, 13,711.80 and 6,399.48 is: 8,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,936.24 : 13,711.80 = 6,399.48 : x
  2. Step 2: Convert to fraction form
    9,936.24/13,711.80 = 6,399.48/x
  3. Step 3: Cross multiply
    9,936.24x = 13,711.80 × 6,399.48
  4. Step 4: Simplify right side
    9,936.24x = 87,748,389.86
  5. Step 5: Solve for x
    x = 87,748,389.86/9,936.24
  6. Step 6: Final answer
    x = 8,831.15

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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.