Home / 13,613.08-20,420.12-3,752.32

Finding the Fourth Proportional to 13,613.08, 20,420.12 and 3,752.32

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Solution

The fourth proportional to 13,613.08, 20,420.12 and 3,752.32 is: 5,628.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.08 : 20,420.12 = 3,752.32 : x
  2. Step 2: Convert to fraction form
    13,613.08/20,420.12 = 3,752.32/x
  3. Step 3: Cross multiply
    13,613.08x = 20,420.12 × 3,752.32
  4. Step 4: Simplify right side
    13,613.08x = 76,622,824.68
  5. Step 5: Solve for x
    x = 76,622,824.68/13,613.08
  6. Step 6: Final answer
    x = 5,628.62

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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.