Home / 21,701.97-29,939.91-14,145.66

Finding the Fourth Proportional to 21,701.97, 29,939.91 and 14,145.66

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Solution

The fourth proportional to 21,701.97, 29,939.91 and 14,145.66 is: 19,515.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,701.97 : 29,939.91 = 14,145.66 : x
  2. Step 2: Convert to fraction form
    21,701.97/29,939.91 = 14,145.66/x
  3. Step 3: Cross multiply
    21,701.97x = 29,939.91 × 14,145.66
  4. Step 4: Simplify right side
    21,701.97x = 423,519,787.29
  5. Step 5: Solve for x
    x = 423,519,787.29/21,701.97
  6. Step 6: Final answer
    x = 19,515.27

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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.