Home / 13,309.35-19,959.90-4,422.78

Finding the Fourth Proportional to 13,309.35, 19,959.90 and 4,422.78

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Solution

The fourth proportional to 13,309.35, 19,959.90 and 4,422.78 is: 6,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.35 : 19,959.90 = 4,422.78 : x
  2. Step 2: Convert to fraction form
    13,309.35/19,959.90 = 4,422.78/x
  3. Step 3: Cross multiply
    13,309.35x = 19,959.90 × 4,422.78
  4. Step 4: Simplify right side
    13,309.35x = 88,278,229.94
  5. Step 5: Solve for x
    x = 88,278,229.94/13,309.35
  6. Step 6: Final answer
    x = 6,632.80

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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.