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Finding the Fourth Proportional to 19,819.52, 27,350.06 and 11,866.13

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Solution

The fourth proportional to 19,819.52, 27,350.06 and 11,866.13 is: 16,374.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.52 : 27,350.06 = 11,866.13 : x
  2. Step 2: Convert to fraction form
    19,819.52/27,350.06 = 11,866.13/x
  3. Step 3: Cross multiply
    19,819.52x = 27,350.06 × 11,866.13
  4. Step 4: Simplify right side
    19,819.52x = 324,539,273.95
  5. Step 5: Solve for x
    x = 324,539,273.95/19,819.52
  6. Step 6: Final answer
    x = 16,374.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.