Home / 20,974.73-28,949.27-12,028.28

Finding the Fourth Proportional to 20,974.73, 28,949.27 and 12,028.28

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Solution

The fourth proportional to 20,974.73, 28,949.27 and 12,028.28 is: 16,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.73 : 28,949.27 = 12,028.28 : x
  2. Step 2: Convert to fraction form
    20,974.73/28,949.27 = 12,028.28/x
  3. Step 3: Cross multiply
    20,974.73x = 28,949.27 × 12,028.28
  4. Step 4: Simplify right side
    20,974.73x = 348,209,720.47
  5. Step 5: Solve for x
    x = 348,209,720.47/20,974.73
  6. Step 6: Final answer
    x = 16,601.40

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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.