Home / 21,355.25-29,470.26-11,923.80

Finding the Fourth Proportional to 21,355.25, 29,470.26 and 11,923.80

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Solution

The fourth proportional to 21,355.25, 29,470.26 and 11,923.80 is: 16,454.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,355.25 : 29,470.26 = 11,923.80 : x
  2. Step 2: Convert to fraction form
    21,355.25/29,470.26 = 11,923.80/x
  3. Step 3: Cross multiply
    21,355.25x = 29,470.26 × 11,923.80
  4. Step 4: Simplify right side
    21,355.25x = 351,397,486.19
  5. Step 5: Solve for x
    x = 351,397,486.19/21,355.25
  6. Step 6: Final answer
    x = 16,454.86

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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.