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Finding the Fourth Proportional to 11,469.79, 15,831.59 and 6,756.79

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Solution

The fourth proportional to 11,469.79, 15,831.59 and 6,756.79 is: 9,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,469.79 : 15,831.59 = 6,756.79 : x
  2. Step 2: Convert to fraction form
    11,469.79/15,831.59 = 6,756.79/x
  3. Step 3: Cross multiply
    11,469.79x = 15,831.59 × 6,756.79
  4. Step 4: Simplify right side
    11,469.79x = 106,970,729.00
  5. Step 5: Solve for x
    x = 106,970,729.00/11,469.79
  6. Step 6: Final answer
    x = 9,326.30

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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.