Home / 31,718.60-43,771.56-18,289.80

Finding the Fourth Proportional to 31,718.60, 43,771.56 and 18,289.80

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Solution

The fourth proportional to 31,718.60, 43,771.56 and 18,289.80 is: 25,239.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.60 : 43,771.56 = 18,289.80 : x
  2. Step 2: Convert to fraction form
    31,718.60/43,771.56 = 18,289.80/x
  3. Step 3: Cross multiply
    31,718.60x = 43,771.56 × 18,289.80
  4. Step 4: Simplify right side
    31,718.60x = 800,573,078.09
  5. Step 5: Solve for x
    x = 800,573,078.09/31,718.60
  6. Step 6: Final answer
    x = 25,239.86

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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.