Home / 20,100.54-27,734.75-12,143.21

Finding the Fourth Proportional to 20,100.54, 27,734.75 and 12,143.21

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Solution

The fourth proportional to 20,100.54, 27,734.75 and 12,143.21 is: 16,755.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.54 : 27,734.75 = 12,143.21 : x
  2. Step 2: Convert to fraction form
    20,100.54/27,734.75 = 12,143.21/x
  3. Step 3: Cross multiply
    20,100.54x = 27,734.75 × 12,143.21
  4. Step 4: Simplify right side
    20,100.54x = 336,788,694.16
  5. Step 5: Solve for x
    x = 336,788,694.16/20,100.54
  6. Step 6: Final answer
    x = 16,755.21

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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.