Home / 20,251.87-27,938.93-12,693.04

Finding the Fourth Proportional to 20,251.87, 27,938.93 and 12,693.04

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Solution

The fourth proportional to 20,251.87, 27,938.93 and 12,693.04 is: 17,510.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.87 : 27,938.93 = 12,693.04 : x
  2. Step 2: Convert to fraction form
    20,251.87/27,938.93 = 12,693.04/x
  3. Step 3: Cross multiply
    20,251.87x = 27,938.93 × 12,693.04
  4. Step 4: Simplify right side
    20,251.87x = 354,629,822.73
  5. Step 5: Solve for x
    x = 354,629,822.73/20,251.87
  6. Step 6: Final answer
    x = 17,510.97

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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.