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Finding the Fourth Proportional to 18,483.70, 27,729.60 and 7,387.60

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Solution

The fourth proportional to 18,483.70, 27,729.60 and 7,387.60 is: 11,083.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.70 : 27,729.60 = 7,387.60 : x
  2. Step 2: Convert to fraction form
    18,483.70/27,729.60 = 7,387.60/x
  3. Step 3: Cross multiply
    18,483.70x = 27,729.60 × 7,387.60
  4. Step 4: Simplify right side
    18,483.70x = 204,855,192.96
  5. Step 5: Solve for x
    x = 204,855,192.96/18,483.70
  6. Step 6: Final answer
    x = 11,083.02

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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.