Home / 21,354.86-29,469.73-11,923.42

Finding the Fourth Proportional to 21,354.86, 29,469.73 and 11,923.42

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Solution

The fourth proportional to 21,354.86, 29,469.73 and 11,923.42 is: 16,454.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.86 : 29,469.73 = 11,923.42 : x
  2. Step 2: Convert to fraction form
    21,354.86/29,469.73 = 11,923.42/x
  3. Step 3: Cross multiply
    21,354.86x = 29,469.73 × 11,923.42
  4. Step 4: Simplify right side
    21,354.86x = 351,379,968.08
  5. Step 5: Solve for x
    x = 351,379,968.08/21,354.86
  6. Step 6: Final answer
    x = 16,454.33

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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.