Home / 31,986.71-47,966.12-16,990.54

Finding the Fourth Proportional to 31,986.71, 47,966.12 and 16,990.54

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Solution

The fourth proportional to 31,986.71, 47,966.12 and 16,990.54 is: 25,478.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.71 : 47,966.12 = 16,990.54 : x
  2. Step 2: Convert to fraction form
    31,986.71/47,966.12 = 16,990.54/x
  3. Step 3: Cross multiply
    31,986.71x = 47,966.12 × 16,990.54
  4. Step 4: Simplify right side
    31,986.71x = 814,970,504.73
  5. Step 5: Solve for x
    x = 814,970,504.73/31,986.71
  6. Step 6: Final answer
    x = 25,478.41

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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.