Home / 21,809.97-30,096.20-12,249.36

Finding the Fourth Proportional to 21,809.97, 30,096.20 and 12,249.36

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Solution

The fourth proportional to 21,809.97, 30,096.20 and 12,249.36 is: 16,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809.97 : 30,096.20 = 12,249.36 : x
  2. Step 2: Convert to fraction form
    21,809.97/30,096.20 = 12,249.36/x
  3. Step 3: Cross multiply
    21,809.97x = 30,096.20 × 12,249.36
  4. Step 4: Simplify right side
    21,809.97x = 368,659,259.90
  5. Step 5: Solve for x
    x = 368,659,259.90/21,809.97
  6. Step 6: Final answer
    x = 16,903.24

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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.