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Finding the Fourth Proportional to 18,290.27, 27,429.98 and 7,760.15

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Solution

The fourth proportional to 18,290.27, 27,429.98 and 7,760.15 is: 11,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,290.27 : 27,429.98 = 7,760.15 : x
  2. Step 2: Convert to fraction form
    18,290.27/27,429.98 = 7,760.15/x
  3. Step 3: Cross multiply
    18,290.27x = 27,429.98 × 7,760.15
  4. Step 4: Simplify right side
    18,290.27x = 212,860,583.35
  5. Step 5: Solve for x
    x = 212,860,583.35/18,290.27
  6. Step 6: Final answer
    x = 11,637.92

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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.