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Finding the Fourth Proportional to 18,491.52, 27,735.72 and 7,961.12

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Solution

The fourth proportional to 18,491.52, 27,735.72 and 7,961.12 is: 11,941.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.52 : 27,735.72 = 7,961.12 : x
  2. Step 2: Convert to fraction form
    18,491.52/27,735.72 = 7,961.12/x
  3. Step 3: Cross multiply
    18,491.52x = 27,735.72 × 7,961.12
  4. Step 4: Simplify right side
    18,491.52x = 220,807,395.21
  5. Step 5: Solve for x
    x = 220,807,395.21/18,491.52
  6. Step 6: Final answer
    x = 11,941.01

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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.