Home / 31,981.80-47,972.70-17,197.68

Finding the Fourth Proportional to 31,981.80, 47,972.70 and 17,197.68

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Solution

The fourth proportional to 31,981.80, 47,972.70 and 17,197.68 is: 25,796.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,981.80 : 47,972.70 = 17,197.68 : x
  2. Step 2: Convert to fraction form
    31,981.80/47,972.70 = 17,197.68/x
  3. Step 3: Cross multiply
    31,981.80x = 47,972.70 × 17,197.68
  4. Step 4: Simplify right side
    31,981.80x = 825,019,143.34
  5. Step 5: Solve for x
    x = 825,019,143.34/31,981.80
  6. Step 6: Final answer
    x = 25,796.52

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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.