Home / 13,613.83-20,418.88-3,751.69

Finding the Fourth Proportional to 13,613.83, 20,418.88 and 3,751.69

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Solution

The fourth proportional to 13,613.83, 20,418.88 and 3,751.69 is: 5,627.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.83 : 20,418.88 = 3,751.69 : x
  2. Step 2: Convert to fraction form
    13,613.83/20,418.88 = 3,751.69/x
  3. Step 3: Cross multiply
    13,613.83x = 20,418.88 × 3,751.69
  4. Step 4: Simplify right side
    13,613.83x = 76,605,307.91
  5. Step 5: Solve for x
    x = 76,605,307.91/13,613.83
  6. Step 6: Final answer
    x = 5,627.02

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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.