Home / 28,604.97-39,431.10-20,083.18

Finding the Fourth Proportional to 28,604.97, 39,431.10 and 20,083.18

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Solution

The fourth proportional to 28,604.97, 39,431.10 and 20,083.18 is: 27,684.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,604.97 : 39,431.10 = 20,083.18 : x
  2. Step 2: Convert to fraction form
    28,604.97/39,431.10 = 20,083.18/x
  3. Step 3: Cross multiply
    28,604.97x = 39,431.10 × 20,083.18
  4. Step 4: Simplify right side
    28,604.97x = 791,901,878.90
  5. Step 5: Solve for x
    x = 791,901,878.90/28,604.97
  6. Step 6: Final answer
    x = 27,684.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.