Home / 12,738.87-17,579.70-7,073.73

Finding the Fourth Proportional to 12,738.87, 17,579.70 and 7,073.73

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Solution

The fourth proportional to 12,738.87, 17,579.70 and 7,073.73 is: 9,761.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.87 : 17,579.70 = 7,073.73 : x
  2. Step 2: Convert to fraction form
    12,738.87/17,579.70 = 7,073.73/x
  3. Step 3: Cross multiply
    12,738.87x = 17,579.70 × 7,073.73
  4. Step 4: Simplify right side
    12,738.87x = 124,354,051.28
  5. Step 5: Solve for x
    x = 124,354,051.28/12,738.87
  6. Step 6: Final answer
    x = 9,761.78

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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.