Home / 13,614.20-18,786.98-7,645.74

Finding the Fourth Proportional to 13,614.20, 18,786.98 and 7,645.74

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Solution

The fourth proportional to 13,614.20, 18,786.98 and 7,645.74 is: 10,550.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.20 : 18,786.98 = 7,645.74 : x
  2. Step 2: Convert to fraction form
    13,614.20/18,786.98 = 7,645.74/x
  3. Step 3: Cross multiply
    13,614.20x = 18,786.98 × 7,645.74
  4. Step 4: Simplify right side
    13,614.20x = 143,640,364.47
  5. Step 5: Solve for x
    x = 143,640,364.47/13,614.20
  6. Step 6: Final answer
    x = 10,550.78

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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.