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Finding the Fourth Proportional to 18,272.17, 27,411.12 and 7,742.22

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Solution

The fourth proportional to 18,272.17, 27,411.12 and 7,742.22 is: 11,614.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.17 : 27,411.12 = 7,742.22 : x
  2. Step 2: Convert to fraction form
    18,272.17/27,411.12 = 7,742.22/x
  3. Step 3: Cross multiply
    18,272.17x = 27,411.12 × 7,742.22
  4. Step 4: Simplify right side
    18,272.17x = 212,222,921.49
  5. Step 5: Solve for x
    x = 212,222,921.49/18,272.17
  6. Step 6: Final answer
    x = 11,614.54

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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.