Home / 18,143.06-27,221.58-7,057.55

Finding the Fourth Proportional to 18,143.06, 27,221.58 and 7,057.55

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Solution

The fourth proportional to 18,143.06, 27,221.58 and 7,057.55 is: 10,589.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.06 : 27,221.58 = 7,057.55 : x
  2. Step 2: Convert to fraction form
    18,143.06/27,221.58 = 7,057.55/x
  3. Step 3: Cross multiply
    18,143.06x = 27,221.58 × 7,057.55
  4. Step 4: Simplify right side
    18,143.06x = 192,117,729.98
  5. Step 5: Solve for x
    x = 192,117,729.98/18,143.06
  6. Step 6: Final answer
    x = 10,589.05

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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.