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Finding the Fourth Proportional to 18,531.17, 27,801.94 and 7,445.64

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Solution

The fourth proportional to 18,531.17, 27,801.94 and 7,445.64 is: 11,170.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.17 : 27,801.94 = 7,445.64 : x
  2. Step 2: Convert to fraction form
    18,531.17/27,801.94 = 7,445.64/x
  3. Step 3: Cross multiply
    18,531.17x = 27,801.94 × 7,445.64
  4. Step 4: Simplify right side
    18,531.17x = 207,003,097.53
  5. Step 5: Solve for x
    x = 207,003,097.53/18,531.17
  6. Step 6: Final answer
    x = 11,170.54

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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.