Home / 13,631.36-20,448.20-3,770.64

Finding the Fourth Proportional to 13,631.36, 20,448.20 and 3,770.64

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Solution

The fourth proportional to 13,631.36, 20,448.20 and 3,770.64 is: 5,656.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.36 : 20,448.20 = 3,770.64 : x
  2. Step 2: Convert to fraction form
    13,631.36/20,448.20 = 3,770.64/x
  3. Step 3: Cross multiply
    13,631.36x = 20,448.20 × 3,770.64
  4. Step 4: Simplify right side
    13,631.36x = 77,102,800.85
  5. Step 5: Solve for x
    x = 77,102,800.85/13,631.36
  6. Step 6: Final answer
    x = 5,656.28

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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.