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Finding the Fourth Proportional to 18,404.74, 27,606.75 and 5,257

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Solution

The fourth proportional to 18,404.74, 27,606.75 and 5,257 is: 7,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.74 : 27,606.75 = 5,257 : x
  2. Step 2: Convert to fraction form
    18,404.74/27,606.75 = 5,257/x
  3. Step 3: Cross multiply
    18,404.74x = 27,606.75 × 5,257
  4. Step 4: Simplify right side
    18,404.74x = 145,128,684.75
  5. Step 5: Solve for x
    x = 145,128,684.75/18,404.74
  6. Step 6: Final answer
    x = 7,885.40

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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.