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Finding the Fourth Proportional to 18,460.78, 27,691.17 and 4,609.78

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Solution

The fourth proportional to 18,460.78, 27,691.17 and 4,609.78 is: 6,914.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,460.78 : 27,691.17 = 4,609.78 : x
  2. Step 2: Convert to fraction form
    18,460.78/27,691.17 = 4,609.78/x
  3. Step 3: Cross multiply
    18,460.78x = 27,691.17 × 4,609.78
  4. Step 4: Simplify right side
    18,460.78x = 127,650,253.54
  5. Step 5: Solve for x
    x = 127,650,253.54/18,460.78
  6. Step 6: Final answer
    x = 6,914.67

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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.