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Finding the Fourth Proportional to 14,645.28, 21,979.54 and 7,627.28

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Solution

The fourth proportional to 14,645.28, 21,979.54 and 7,627.28 is: 11,446.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,645.28 : 21,979.54 = 7,627.28 : x
  2. Step 2: Convert to fraction form
    14,645.28/21,979.54 = 7,627.28/x
  3. Step 3: Cross multiply
    14,645.28x = 21,979.54 × 7,627.28
  4. Step 4: Simplify right side
    14,645.28x = 167,644,105.85
  5. Step 5: Solve for x
    x = 167,644,105.85/14,645.28
  6. Step 6: Final answer
    x = 11,446.97

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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.