Home / 13,808.11-20,712.15-3,947.38

Finding the Fourth Proportional to 13,808.11, 20,712.15 and 3,947.38

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Solution

The fourth proportional to 13,808.11, 20,712.15 and 3,947.38 is: 5,921.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.11 : 20,712.15 = 3,947.38 : x
  2. Step 2: Convert to fraction form
    13,808.11/20,712.15 = 3,947.38/x
  3. Step 3: Cross multiply
    13,808.11x = 20,712.15 × 3,947.38
  4. Step 4: Simplify right side
    13,808.11x = 81,758,623.11
  5. Step 5: Solve for x
    x = 81,758,623.11/13,808.11
  6. Step 6: Final answer
    x = 5,921.06

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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.