Home / 13,818.87-20,731.55-5,499.36

Finding the Fourth Proportional to 13,818.87, 20,731.55 and 5,499.36

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Solution

The fourth proportional to 13,818.87, 20,731.55 and 5,499.36 is: 8,250.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.87 : 20,731.55 = 5,499.36 : x
  2. Step 2: Convert to fraction form
    13,818.87/20,731.55 = 5,499.36/x
  3. Step 3: Cross multiply
    13,818.87x = 20,731.55 × 5,499.36
  4. Step 4: Simplify right side
    13,818.87x = 114,010,229.31
  5. Step 5: Solve for x
    x = 114,010,229.31/13,818.87
  6. Step 6: Final answer
    x = 8,250.33

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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.