Home / 13,577.78-18,738.07-7,611.36

Finding the Fourth Proportional to 13,577.78, 18,738.07 and 7,611.36

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Solution

The fourth proportional to 13,577.78, 18,738.07 and 7,611.36 is: 10,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,577.78 : 18,738.07 = 7,611.36 : x
  2. Step 2: Convert to fraction form
    13,577.78/18,738.07 = 7,611.36/x
  3. Step 3: Cross multiply
    13,577.78x = 18,738.07 × 7,611.36
  4. Step 4: Simplify right side
    13,577.78x = 142,622,196.48
  5. Step 5: Solve for x
    x = 142,622,196.48/13,577.78
  6. Step 6: Final answer
    x = 10,504.09

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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.