Home / 13,814.79-20,719.20-3,951.42

Finding the Fourth Proportional to 13,814.79, 20,719.20 and 3,951.42

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Solution

The fourth proportional to 13,814.79, 20,719.20 and 3,951.42 is: 5,926.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,814.79 : 20,719.20 = 3,951.42 : x
  2. Step 2: Convert to fraction form
    13,814.79/20,719.20 = 3,951.42/x
  3. Step 3: Cross multiply
    13,814.79x = 20,719.20 × 3,951.42
  4. Step 4: Simplify right side
    13,814.79x = 81,870,261.26
  5. Step 5: Solve for x
    x = 81,870,261.26/13,814.79
  6. Step 6: Final answer
    x = 5,926.28

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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.