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Finding the Fourth Proportional to 19,699.86, 29,555.25 and 10,940.92

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Solution

The fourth proportional to 19,699.86, 29,555.25 and 10,940.92 is: 16,414.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,699.86 : 29,555.25 = 10,940.92 : x
  2. Step 2: Convert to fraction form
    19,699.86/29,555.25 = 10,940.92/x
  3. Step 3: Cross multiply
    19,699.86x = 29,555.25 × 10,940.92
  4. Step 4: Simplify right side
    19,699.86x = 323,361,625.83
  5. Step 5: Solve for x
    x = 323,361,625.83/19,699.86
  6. Step 6: Final answer
    x = 16,414.42

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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.