Home / 21,674.07-29,906.28-12,721.95

Finding the Fourth Proportional to 21,674.07, 29,906.28 and 12,721.95

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Solution

The fourth proportional to 21,674.07, 29,906.28 and 12,721.95 is: 17,553.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,674.07 : 29,906.28 = 12,721.95 : x
  2. Step 2: Convert to fraction form
    21,674.07/29,906.28 = 12,721.95/x
  3. Step 3: Cross multiply
    21,674.07x = 29,906.28 × 12,721.95
  4. Step 4: Simplify right side
    21,674.07x = 380,466,198.85
  5. Step 5: Solve for x
    x = 380,466,198.85/21,674.07
  6. Step 6: Final answer
    x = 17,553.98

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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.