Home / 13,613.88-20,423.79-4,254.60

Finding the Fourth Proportional to 13,613.88, 20,423.79 and 4,254.60

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Solution

The fourth proportional to 13,613.88, 20,423.79 and 4,254.60 is: 6,382.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.88 : 20,423.79 = 4,254.60 : x
  2. Step 2: Convert to fraction form
    13,613.88/20,423.79 = 4,254.60/x
  3. Step 3: Cross multiply
    13,613.88x = 20,423.79 × 4,254.60
  4. Step 4: Simplify right side
    13,613.88x = 86,895,056.93
  5. Step 5: Solve for x
    x = 86,895,056.93/13,613.88
  6. Step 6: Final answer
    x = 6,382.83

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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.