Home / 18,381.06-27,566.72-7,990.38

Finding the Fourth Proportional to 18,381.06, 27,566.72 and 7,990.38

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Solution

The fourth proportional to 18,381.06, 27,566.72 and 7,990.38 is: 11,983.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.06 : 27,566.72 = 7,990.38 : x
  2. Step 2: Convert to fraction form
    18,381.06/27,566.72 = 7,990.38/x
  3. Step 3: Cross multiply
    18,381.06x = 27,566.72 × 7,990.38
  4. Step 4: Simplify right side
    18,381.06x = 220,268,568.15
  5. Step 5: Solve for x
    x = 220,268,568.15/18,381.06
  6. Step 6: Final answer
    x = 11,983.45

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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.