Home / 13,613.14-20,422.54-4,252.78

Finding the Fourth Proportional to 13,613.14, 20,422.54 and 4,252.78

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Solution

The fourth proportional to 13,613.14, 20,422.54 and 4,252.78 is: 6,380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.14 : 20,422.54 = 4,252.78 : x
  2. Step 2: Convert to fraction form
    13,613.14/20,422.54 = 4,252.78/x
  3. Step 3: Cross multiply
    13,613.14x = 20,422.54 × 4,252.78
  4. Step 4: Simplify right side
    13,613.14x = 86,852,473.67
  5. Step 5: Solve for x
    x = 86,852,473.67/13,613.14
  6. Step 6: Final answer
    x = 6,380.05

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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.