Home / 13,793.75-19,039.28-8,131.79

Finding the Fourth Proportional to 13,793.75, 19,039.28 and 8,131.79

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Solution

The fourth proportional to 13,793.75, 19,039.28 and 8,131.79 is: 11,224.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,793.75 : 19,039.28 = 8,131.79 : x
  2. Step 2: Convert to fraction form
    13,793.75/19,039.28 = 8,131.79/x
  3. Step 3: Cross multiply
    13,793.75x = 19,039.28 × 8,131.79
  4. Step 4: Simplify right side
    13,793.75x = 154,823,426.71
  5. Step 5: Solve for x
    x = 154,823,426.71/13,793.75
  6. Step 6: Final answer
    x = 11,224.17

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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.