Home / 13,613.33-18,786.08-7,948.55

Finding the Fourth Proportional to 13,613.33, 18,786.08 and 7,948.55

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Solution

The fourth proportional to 13,613.33, 18,786.08 and 7,948.55 is: 10,968.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.33 : 18,786.08 = 7,948.55 : x
  2. Step 2: Convert to fraction form
    13,613.33/18,786.08 = 7,948.55/x
  3. Step 3: Cross multiply
    13,613.33x = 18,786.08 × 7,948.55
  4. Step 4: Simplify right side
    13,613.33x = 149,322,012.64
  5. Step 5: Solve for x
    x = 149,322,012.64/13,613.33
  6. Step 6: Final answer
    x = 10,968.81

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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.