Home / 31,292.50-43,183.66-18,720.22

Finding the Fourth Proportional to 31,292.50, 43,183.66 and 18,720.22

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Solution

The fourth proportional to 31,292.50, 43,183.66 and 18,720.22 is: 25,833.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,292.50 : 43,183.66 = 18,720.22 : x
  2. Step 2: Convert to fraction form
    31,292.50/43,183.66 = 18,720.22/x
  3. Step 3: Cross multiply
    31,292.50x = 43,183.66 × 18,720.22
  4. Step 4: Simplify right side
    31,292.50x = 808,407,615.61
  5. Step 5: Solve for x
    x = 808,407,615.61/31,292.50
  6. Step 6: Final answer
    x = 25,833.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.