Home / 18,610.95-27,920.28-6,131.74

Finding the Fourth Proportional to 18,610.95, 27,920.28 and 6,131.74

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Solution

The fourth proportional to 18,610.95, 27,920.28 and 6,131.74 is: 9,198.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.95 : 27,920.28 = 6,131.74 : x
  2. Step 2: Convert to fraction form
    18,610.95/27,920.28 = 6,131.74/x
  3. Step 3: Cross multiply
    18,610.95x = 27,920.28 × 6,131.74
  4. Step 4: Simplify right side
    18,610.95x = 171,199,897.69
  5. Step 5: Solve for x
    x = 171,199,897.69/18,610.95
  6. Step 6: Final answer
    x = 9,198.88

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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.