Home / 31,558.75-43,556.71-18,812.75

Finding the Fourth Proportional to 31,558.75, 43,556.71 and 18,812.75

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Solution

The fourth proportional to 31,558.75, 43,556.71 and 18,812.75 is: 25,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,558.75 : 43,556.71 = 18,812.75 : x
  2. Step 2: Convert to fraction form
    31,558.75/43,556.71 = 18,812.75/x
  3. Step 3: Cross multiply
    31,558.75x = 43,556.71 × 18,812.75
  4. Step 4: Simplify right side
    31,558.75x = 819,421,469.59
  5. Step 5: Solve for x
    x = 819,421,469.59/31,558.75
  6. Step 6: Final answer
    x = 25,964.95

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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.