Home / 14,391.97-19,860.82-8,422.47

Finding the Fourth Proportional to 14,391.97, 19,860.82 and 8,422.47

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Solution

The fourth proportional to 14,391.97, 19,860.82 and 8,422.47 is: 11,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.97 : 19,860.82 = 8,422.47 : x
  2. Step 2: Convert to fraction form
    14,391.97/19,860.82 = 8,422.47/x
  3. Step 3: Cross multiply
    14,391.97x = 19,860.82 × 8,422.47
  4. Step 4: Simplify right side
    14,391.97x = 167,277,139.57
  5. Step 5: Solve for x
    x = 167,277,139.57/14,391.97
  6. Step 6: Final answer
    x = 11,622.95

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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.