Home / 31,221.25-46,831.92-12,753.25

Finding the Fourth Proportional to 31,221.25, 46,831.92 and 12,753.25

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Solution

The fourth proportional to 31,221.25, 46,831.92 and 12,753.25 is: 19,129.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,221.25 : 46,831.92 = 12,753.25 : x
  2. Step 2: Convert to fraction form
    31,221.25/46,831.92 = 12,753.25/x
  3. Step 3: Cross multiply
    31,221.25x = 46,831.92 × 12,753.25
  4. Step 4: Simplify right side
    31,221.25x = 597,259,183.74
  5. Step 5: Solve for x
    x = 597,259,183.74/31,221.25
  6. Step 6: Final answer
    x = 19,129.89

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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.