Home / 31,831.71-47,747.57-11,838.59

Finding the Fourth Proportional to 31,831.71, 47,747.57 and 11,838.59

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Solution

The fourth proportional to 31,831.71, 47,747.57 and 11,838.59 is: 17,757.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,831.71 : 47,747.57 = 11,838.59 : x
  2. Step 2: Convert to fraction form
    31,831.71/47,747.57 = 11,838.59/x
  3. Step 3: Cross multiply
    31,831.71x = 47,747.57 × 11,838.59
  4. Step 4: Simplify right side
    31,831.71x = 565,263,710.87
  5. Step 5: Solve for x
    x = 565,263,710.87/31,831.71
  6. Step 6: Final answer
    x = 17,757.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.