Home / 21,799.11-30,083.76-12,846.99

Finding the Fourth Proportional to 21,799.11, 30,083.76 and 12,846.99

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Solution

The fourth proportional to 21,799.11, 30,083.76 and 12,846.99 is: 17,729.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,799.11 : 30,083.76 = 12,846.99 : x
  2. Step 2: Convert to fraction form
    21,799.11/30,083.76 = 12,846.99/x
  3. Step 3: Cross multiply
    21,799.11x = 30,083.76 × 12,846.99
  4. Step 4: Simplify right side
    21,799.11x = 386,485,763.88
  5. Step 5: Solve for x
    x = 386,485,763.88/21,799.11
  6. Step 6: Final answer
    x = 17,729.43

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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.