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Finding the Fourth Proportional to 19,969.92, 27,550.44 and 12,893.76

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Solution

The fourth proportional to 19,969.92, 27,550.44 and 12,893.76 is: 17,788.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.92 : 27,550.44 = 12,893.76 : x
  2. Step 2: Convert to fraction form
    19,969.92/27,550.44 = 12,893.76/x
  3. Step 3: Cross multiply
    19,969.92x = 27,550.44 × 12,893.76
  4. Step 4: Simplify right side
    19,969.92x = 355,228,761.25
  5. Step 5: Solve for x
    x = 355,228,761.25/19,969.92
  6. Step 6: Final answer
    x = 17,788.19

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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.