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Finding the Fourth Proportional to 29,216.36, 43,831.86 and 8,439.86

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Solution

The fourth proportional to 29,216.36, 43,831.86 and 8,439.86 is: 12,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,216.36 : 43,831.86 = 8,439.86 : x
  2. Step 2: Convert to fraction form
    29,216.36/43,831.86 = 8,439.86/x
  3. Step 3: Cross multiply
    29,216.36x = 43,831.86 × 8,439.86
  4. Step 4: Simplify right side
    29,216.36x = 369,934,761.94
  5. Step 5: Solve for x
    x = 369,934,761.94/29,216.36
  6. Step 6: Final answer
    x = 12,661.90

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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.