Home / 18,611.20-27,908.70-6,126.40

Finding the Fourth Proportional to 18,611.20, 27,908.70 and 6,126.40

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Solution

The fourth proportional to 18,611.20, 27,908.70 and 6,126.40 is: 9,186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.20 : 27,908.70 = 6,126.40 : x
  2. Step 2: Convert to fraction form
    18,611.20/27,908.70 = 6,126.40/x
  3. Step 3: Cross multiply
    18,611.20x = 27,908.70 × 6,126.40
  4. Step 4: Simplify right side
    18,611.20x = 170,979,859.68
  5. Step 5: Solve for x
    x = 170,979,859.68/18,611.20
  6. Step 6: Final answer
    x = 9,186.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.