Home / 18,271.79-27,391.28-7,186.43

Finding the Fourth Proportional to 18,271.79, 27,391.28 and 7,186.43

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Solution

The fourth proportional to 18,271.79, 27,391.28 and 7,186.43 is: 10,773.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.79 : 27,391.28 = 7,186.43 : x
  2. Step 2: Convert to fraction form
    18,271.79/27,391.28 = 7,186.43/x
  3. Step 3: Cross multiply
    18,271.79x = 27,391.28 × 7,186.43
  4. Step 4: Simplify right side
    18,271.79x = 196,845,575.83
  5. Step 5: Solve for x
    x = 196,845,575.83/18,271.79
  6. Step 6: Final answer
    x = 10,773.20

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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.