Home / 11,831.50-17,743.41-3,931.90

Finding the Fourth Proportional to 11,831.50, 17,743.41 and 3,931.90

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Solution

The fourth proportional to 11,831.50, 17,743.41 and 3,931.90 is: 5,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,831.50 : 17,743.41 = 3,931.90 : x
  2. Step 2: Convert to fraction form
    11,831.50/17,743.41 = 3,931.90/x
  3. Step 3: Cross multiply
    11,831.50x = 17,743.41 × 3,931.90
  4. Step 4: Simplify right side
    11,831.50x = 69,765,225.06
  5. Step 5: Solve for x
    x = 69,765,225.06/11,831.50
  6. Step 6: Final answer
    x = 5,896.57

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1.5x scale

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.