Home / 13,728.12-20,595.48-3,867.36

Finding the Fourth Proportional to 13,728.12, 20,595.48 and 3,867.36

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Solution

The fourth proportional to 13,728.12, 20,595.48 and 3,867.36 is: 5,801.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.12 : 20,595.48 = 3,867.36 : x
  2. Step 2: Convert to fraction form
    13,728.12/20,595.48 = 3,867.36/x
  3. Step 3: Cross multiply
    13,728.12x = 20,595.48 × 3,867.36
  4. Step 4: Simplify right side
    13,728.12x = 79,650,135.53
  5. Step 5: Solve for x
    x = 79,650,135.53/13,728.12
  6. Step 6: Final answer
    x = 5,801.97

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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.