Home / 14,109.30-19,464.30-8,138.79

Finding the Fourth Proportional to 14,109.30, 19,464.30 and 8,138.79

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Solution

The fourth proportional to 14,109.30, 19,464.30 and 8,138.79 is: 11,227.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.30 : 19,464.30 = 8,138.79 : x
  2. Step 2: Convert to fraction form
    14,109.30/19,464.30 = 8,138.79/x
  3. Step 3: Cross multiply
    14,109.30x = 19,464.30 × 8,138.79
  4. Step 4: Simplify right side
    14,109.30x = 158,415,850.20
  5. Step 5: Solve for x
    x = 158,415,850.20/14,109.30
  6. Step 6: Final answer
    x = 11,227.76

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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.