Home / 21,340.94-29,450-11,781.58

Finding the Fourth Proportional to 21,340.94, 29,450 and 11,781.58

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Solution

The fourth proportional to 21,340.94, 29,450 and 11,781.58 is: 16,258.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.94 : 29,450 = 11,781.58 : x
  2. Step 2: Convert to fraction form
    21,340.94/29,450 = 11,781.58/x
  3. Step 3: Cross multiply
    21,340.94x = 29,450 × 11,781.58
  4. Step 4: Simplify right side
    21,340.94x = 346,967,531
  5. Step 5: Solve for x
    x = 346,967,531/21,340.94
  6. Step 6: Final answer
    x = 16,258.31

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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.