Home / 13,613.67-18,786.20-7,645.59

Finding the Fourth Proportional to 13,613.67, 18,786.20 and 7,645.59

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Solution

The fourth proportional to 13,613.67, 18,786.20 and 7,645.59 is: 10,550.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.67 : 18,786.20 = 7,645.59 : x
  2. Step 2: Convert to fraction form
    13,613.67/18,786.20 = 7,645.59/x
  3. Step 3: Cross multiply
    13,613.67x = 18,786.20 × 7,645.59
  4. Step 4: Simplify right side
    13,613.67x = 143,631,544.63
  5. Step 5: Solve for x
    x = 143,631,544.63/13,613.67
  6. Step 6: Final answer
    x = 10,550.54

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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.