Home / 13,540.23-20,310.89-4,179.42

Finding the Fourth Proportional to 13,540.23, 20,310.89 and 4,179.42

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Solution

The fourth proportional to 13,540.23, 20,310.89 and 4,179.42 is: 6,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.23 : 20,310.89 = 4,179.42 : x
  2. Step 2: Convert to fraction form
    13,540.23/20,310.89 = 4,179.42/x
  3. Step 3: Cross multiply
    13,540.23x = 20,310.89 × 4,179.42
  4. Step 4: Simplify right side
    13,540.23x = 84,887,718.99
  5. Step 5: Solve for x
    x = 84,887,718.99/13,540.23
  6. Step 6: Final answer
    x = 6,269.30

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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.