Home / 13,910.99-19,191.07-8,318.75

Finding the Fourth Proportional to 13,910.99, 19,191.07 and 8,318.75

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Solution

The fourth proportional to 13,910.99, 19,191.07 and 8,318.75 is: 11,476.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.99 : 19,191.07 = 8,318.75 : x
  2. Step 2: Convert to fraction form
    13,910.99/19,191.07 = 8,318.75/x
  3. Step 3: Cross multiply
    13,910.99x = 19,191.07 × 8,318.75
  4. Step 4: Simplify right side
    13,910.99x = 159,645,713.56
  5. Step 5: Solve for x
    x = 159,645,713.56/13,910.99
  6. Step 6: Final answer
    x = 11,476.23

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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.