Home / 21,400.25-29,532.45-11,968.82

Finding the Fourth Proportional to 21,400.25, 29,532.45 and 11,968.82

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Solution

The fourth proportional to 21,400.25, 29,532.45 and 11,968.82 is: 16,517.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.25 : 29,532.45 = 11,968.82 : x
  2. Step 2: Convert to fraction form
    21,400.25/29,532.45 = 11,968.82/x
  3. Step 3: Cross multiply
    21,400.25x = 29,532.45 × 11,968.82
  4. Step 4: Simplify right side
    21,400.25x = 353,468,370.70
  5. Step 5: Solve for x
    x = 353,468,370.70/21,400.25
  6. Step 6: Final answer
    x = 16,517.02

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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.