Home / 13,808.36-20,712.08-3,947.64

Finding the Fourth Proportional to 13,808.36, 20,712.08 and 3,947.64

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Solution

The fourth proportional to 13,808.36, 20,712.08 and 3,947.64 is: 5,921.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.36 : 20,712.08 = 3,947.64 : x
  2. Step 2: Convert to fraction form
    13,808.36/20,712.08 = 3,947.64/x
  3. Step 3: Cross multiply
    13,808.36x = 20,712.08 × 3,947.64
  4. Step 4: Simplify right side
    13,808.36x = 81,763,815.75
  5. Step 5: Solve for x
    x = 81,763,815.75/13,808.36
  6. Step 6: Final answer
    x = 5,921.33

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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.