Home / 31,320-46,982.20-12,600.12

Finding the Fourth Proportional to 31,320, 46,982.20 and 12,600.12

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Solution

The fourth proportional to 31,320, 46,982.20 and 12,600.12 is: 18,901.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,320 : 46,982.20 = 12,600.12 : x
  2. Step 2: Convert to fraction form
    31,320/46,982.20 = 12,600.12/x
  3. Step 3: Cross multiply
    31,320x = 46,982.20 × 12,600.12
  4. Step 4: Simplify right side
    31,320x = 591,981,357.86
  5. Step 5: Solve for x
    x = 591,981,357.86/31,320
  6. Step 6: Final answer
    x = 18,901.07

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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.