Home / 13,579.97-18,738.11-7,611.89

Finding the Fourth Proportional to 13,579.97, 18,738.11 and 7,611.89

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Solution

The fourth proportional to 13,579.97, 18,738.11 and 7,611.89 is: 10,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.97 : 18,738.11 = 7,611.89 : x
  2. Step 2: Convert to fraction form
    13,579.97/18,738.11 = 7,611.89/x
  3. Step 3: Cross multiply
    13,579.97x = 18,738.11 × 7,611.89
  4. Step 4: Simplify right side
    13,579.97x = 142,632,357.47
  5. Step 5: Solve for x
    x = 142,632,357.47/13,579.97
  6. Step 6: Final answer
    x = 10,503.15

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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.