Home / 13,809.09-20,713.65-3,948.39

Finding the Fourth Proportional to 13,809.09, 20,713.65 and 3,948.39

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Solution

The fourth proportional to 13,809.09, 20,713.65 and 3,948.39 is: 5,922.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.09 : 20,713.65 = 3,948.39 : x
  2. Step 2: Convert to fraction form
    13,809.09/20,713.65 = 3,948.39/x
  3. Step 3: Cross multiply
    13,809.09x = 20,713.65 × 3,948.39
  4. Step 4: Simplify right side
    13,809.09x = 81,785,568.52
  5. Step 5: Solve for x
    x = 81,785,568.52/13,809.09
  6. Step 6: Final answer
    x = 5,922.59

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Similar ratio
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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.