Home / 13,977.20-19,286.34-8,007.72

Finding the Fourth Proportional to 13,977.20, 19,286.34 and 8,007.72

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Solution

The fourth proportional to 13,977.20, 19,286.34 and 8,007.72 is: 11,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.20 : 19,286.34 = 8,007.72 : x
  2. Step 2: Convert to fraction form
    13,977.20/19,286.34 = 8,007.72/x
  3. Step 3: Cross multiply
    13,977.20x = 19,286.34 × 8,007.72
  4. Step 4: Simplify right side
    13,977.20x = 154,439,610.54
  5. Step 5: Solve for x
    x = 154,439,610.54/13,977.20
  6. Step 6: Final answer
    x = 11,049.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.