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Finding the Fourth Proportional to 14,378.73, 19,842.41 and 8,091.11

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Solution

The fourth proportional to 14,378.73, 19,842.41 and 8,091.11 is: 11,165.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.73 : 19,842.41 = 8,091.11 : x
  2. Step 2: Convert to fraction form
    14,378.73/19,842.41 = 8,091.11/x
  3. Step 3: Cross multiply
    14,378.73x = 19,842.41 × 8,091.11
  4. Step 4: Simplify right side
    14,378.73x = 160,546,982.31
  5. Step 5: Solve for x
    x = 160,546,982.31/14,378.73
  6. Step 6: Final answer
    x = 11,165.59

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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.