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Finding the Fourth Proportional to 19,411.92, 26,789.04 and 11,460.96

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Solution

The fourth proportional to 19,411.92, 26,789.04 and 11,460.96 is: 15,816.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.92 : 26,789.04 = 11,460.96 : x
  2. Step 2: Convert to fraction form
    19,411.92/26,789.04 = 11,460.96/x
  3. Step 3: Cross multiply
    19,411.92x = 26,789.04 × 11,460.96
  4. Step 4: Simplify right side
    19,411.92x = 307,028,115.88
  5. Step 5: Solve for x
    x = 307,028,115.88/19,411.92
  6. Step 6: Final answer
    x = 15,816.47

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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.