Home / 13,808.14-20,708.73-3,947.47

Finding the Fourth Proportional to 13,808.14, 20,708.73 and 3,947.47

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Solution

The fourth proportional to 13,808.14, 20,708.73 and 3,947.47 is: 5,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.14 : 20,708.73 = 3,947.47 : x
  2. Step 2: Convert to fraction form
    13,808.14/20,708.73 = 3,947.47/x
  3. Step 3: Cross multiply
    13,808.14x = 20,708.73 × 3,947.47
  4. Step 4: Simplify right side
    13,808.14x = 81,747,090.41
  5. Step 5: Solve for x
    x = 81,747,090.41/13,808.14
  6. Step 6: Final answer
    x = 5,920.21

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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.