Home / 21,107.71-31,630.23-11,734.83

Finding the Fourth Proportional to 21,107.71, 31,630.23 and 11,734.83

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Solution

The fourth proportional to 21,107.71, 31,630.23 and 11,734.83 is: 17,584.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.71 : 31,630.23 = 11,734.83 : x
  2. Step 2: Convert to fraction form
    21,107.71/31,630.23 = 11,734.83/x
  3. Step 3: Cross multiply
    21,107.71x = 31,630.23 × 11,734.83
  4. Step 4: Simplify right side
    21,107.71x = 371,175,512.53
  5. Step 5: Solve for x
    x = 371,175,512.53/21,107.71
  6. Step 6: Final answer
    x = 17,584.83

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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.