Home / 21,154.97-31,734.05-7,115.04

Finding the Fourth Proportional to 21,154.97, 31,734.05 and 7,115.04

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Solution

The fourth proportional to 21,154.97, 31,734.05 and 7,115.04 is: 10,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.97 : 31,734.05 = 7,115.04 : x
  2. Step 2: Convert to fraction form
    21,154.97/31,734.05 = 7,115.04/x
  3. Step 3: Cross multiply
    21,154.97x = 31,734.05 × 7,115.04
  4. Step 4: Simplify right side
    21,154.97x = 225,789,052.90
  5. Step 5: Solve for x
    x = 225,789,052.90/21,154.97
  6. Step 6: Final answer
    x = 10,673.10

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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.