Home / 20,032.22-30,039.15-10,669.79

Finding the Fourth Proportional to 20,032.22, 30,039.15 and 10,669.79

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Solution

The fourth proportional to 20,032.22, 30,039.15 and 10,669.79 is: 15,999.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,032.22 : 30,039.15 = 10,669.79 : x
  2. Step 2: Convert to fraction form
    20,032.22/30,039.15 = 10,669.79/x
  3. Step 3: Cross multiply
    20,032.22x = 30,039.15 × 10,669.79
  4. Step 4: Simplify right side
    20,032.22x = 320,511,422.28
  5. Step 5: Solve for x
    x = 320,511,422.28/20,032.22
  6. Step 6: Final answer
    x = 15,999.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.