Home / 13,577.79-18,738.12-7,611.38

Finding the Fourth Proportional to 13,577.79, 18,738.12 and 7,611.38

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Solution

The fourth proportional to 13,577.79, 18,738.12 and 7,611.38 is: 10,504.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,577.79 : 18,738.12 = 7,611.38 : x
  2. Step 2: Convert to fraction form
    13,577.79/18,738.12 = 7,611.38/x
  3. Step 3: Cross multiply
    13,577.79x = 18,738.12 × 7,611.38
  4. Step 4: Simplify right side
    13,577.79x = 142,622,951.81
  5. Step 5: Solve for x
    x = 142,622,951.81/13,577.79
  6. Step 6: Final answer
    x = 10,504.14

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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.