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Finding the Fourth Proportional to 18,295.66, 27,442.85 and 7,758.89

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Solution

The fourth proportional to 18,295.66, 27,442.85 and 7,758.89 is: 11,638.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,295.66 : 27,442.85 = 7,758.89 : x
  2. Step 2: Convert to fraction form
    18,295.66/27,442.85 = 7,758.89/x
  3. Step 3: Cross multiply
    18,295.66x = 27,442.85 × 7,758.89
  4. Step 4: Simplify right side
    18,295.66x = 212,926,054.44
  5. Step 5: Solve for x
    x = 212,926,054.44/18,295.66
  6. Step 6: Final answer
    x = 11,638.06

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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.