Home / 13,415.46-20,120.87-3,555.73

Finding the Fourth Proportional to 13,415.46, 20,120.87 and 3,555.73

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Solution

The fourth proportional to 13,415.46, 20,120.87 and 3,555.73 is: 5,332.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.46 : 20,120.87 = 3,555.73 : x
  2. Step 2: Convert to fraction form
    13,415.46/20,120.87 = 3,555.73/x
  3. Step 3: Cross multiply
    13,415.46x = 20,120.87 × 3,555.73
  4. Step 4: Simplify right side
    13,415.46x = 71,544,415.13
  5. Step 5: Solve for x
    x = 71,544,415.13/13,415.46
  6. Step 6: Final answer
    x = 5,332.98

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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.