Home / 13,694.27-18,895.68-8,390.79

Finding the Fourth Proportional to 13,694.27, 18,895.68 and 8,390.79

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Solution

The fourth proportional to 13,694.27, 18,895.68 and 8,390.79 is: 11,577.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.27 : 18,895.68 = 8,390.79 : x
  2. Step 2: Convert to fraction form
    13,694.27/18,895.68 = 8,390.79/x
  3. Step 3: Cross multiply
    13,694.27x = 18,895.68 × 8,390.79
  4. Step 4: Simplify right side
    13,694.27x = 158,549,682.79
  5. Step 5: Solve for x
    x = 158,549,682.79/13,694.27
  6. Step 6: Final answer
    x = 11,577.82

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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.