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Finding the Fourth Proportional to 19,262.92, 28,892.72 and 13,664.66

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Solution

The fourth proportional to 19,262.92, 28,892.72 and 13,664.66 is: 20,495.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,262.92 : 28,892.72 = 13,664.66 : x
  2. Step 2: Convert to fraction form
    19,262.92/28,892.72 = 13,664.66/x
  3. Step 3: Cross multiply
    19,262.92x = 28,892.72 × 13,664.66
  4. Step 4: Simplify right side
    19,262.92x = 394,809,195.28
  5. Step 5: Solve for x
    x = 394,809,195.28/19,262.92
  6. Step 6: Final answer
    x = 20,495.81

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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.