Home / 31,868.97-47,809.17-13,138.58

Finding the Fourth Proportional to 31,868.97, 47,809.17 and 13,138.58

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Solution

The fourth proportional to 31,868.97, 47,809.17 and 13,138.58 is: 19,710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,868.97 : 47,809.17 = 13,138.58 : x
  2. Step 2: Convert to fraction form
    31,868.97/47,809.17 = 13,138.58/x
  3. Step 3: Cross multiply
    31,868.97x = 47,809.17 × 13,138.58
  4. Step 4: Simplify right side
    31,868.97x = 628,144,365.73
  5. Step 5: Solve for x
    x = 628,144,365.73/31,868.97
  6. Step 6: Final answer
    x = 19,710.22

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1.5x scale

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.