Home / 13,719.11-20,578.70-3,330.86

Finding the Fourth Proportional to 13,719.11, 20,578.70 and 3,330.86

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Solution

The fourth proportional to 13,719.11, 20,578.70 and 3,330.86 is: 4,996.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.11 : 20,578.70 = 3,330.86 : x
  2. Step 2: Convert to fraction form
    13,719.11/20,578.70 = 3,330.86/x
  3. Step 3: Cross multiply
    13,719.11x = 20,578.70 × 3,330.86
  4. Step 4: Simplify right side
    13,719.11x = 68,544,674.12
  5. Step 5: Solve for x
    x = 68,544,674.12/13,719.11
  6. Step 6: Final answer
    x = 4,996.29

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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.