Home / 13,728.52-20,592.64-3,867.80

Finding the Fourth Proportional to 13,728.52, 20,592.64 and 3,867.80

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Solution

The fourth proportional to 13,728.52, 20,592.64 and 3,867.80 is: 5,801.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.52 : 20,592.64 = 3,867.80 : x
  2. Step 2: Convert to fraction form
    13,728.52/20,592.64 = 3,867.80/x
  3. Step 3: Cross multiply
    13,728.52x = 20,592.64 × 3,867.80
  4. Step 4: Simplify right side
    13,728.52x = 79,648,212.99
  5. Step 5: Solve for x
    x = 79,648,212.99/13,728.52
  6. Step 6: Final answer
    x = 5,801.66

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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.