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Finding the Fourth Proportional to 18,610.85, 27,920.25 and 9,255.89

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Solution

The fourth proportional to 18,610.85, 27,920.25 and 9,255.89 is: 13,885.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.85 : 27,920.25 = 9,255.89 : x
  2. Step 2: Convert to fraction form
    18,610.85/27,920.25 = 9,255.89/x
  3. Step 3: Cross multiply
    18,610.85x = 27,920.25 × 9,255.89
  4. Step 4: Simplify right side
    18,610.85x = 258,426,623.17
  5. Step 5: Solve for x
    x = 258,426,623.17/18,610.85
  6. Step 6: Final answer
    x = 13,885.81

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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.