Home / 13,821.88-20,727.50-4,459.52

Finding the Fourth Proportional to 13,821.88, 20,727.50 and 4,459.52

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Solution

The fourth proportional to 13,821.88, 20,727.50 and 4,459.52 is: 6,687.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.88 : 20,727.50 = 4,459.52 : x
  2. Step 2: Convert to fraction form
    13,821.88/20,727.50 = 4,459.52/x
  3. Step 3: Cross multiply
    13,821.88x = 20,727.50 × 4,459.52
  4. Step 4: Simplify right side
    13,821.88x = 92,434,700.80
  5. Step 5: Solve for x
    x = 92,434,700.80/13,821.88
  6. Step 6: Final answer
    x = 6,687.56

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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.