Home / 13,487.67-18,613.79-7,519.33

Finding the Fourth Proportional to 13,487.67, 18,613.79 and 7,519.33

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Solution

The fourth proportional to 13,487.67, 18,613.79 and 7,519.33 is: 10,377.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.67 : 18,613.79 = 7,519.33 : x
  2. Step 2: Convert to fraction form
    13,487.67/18,613.79 = 7,519.33/x
  3. Step 3: Cross multiply
    13,487.67x = 18,613.79 × 7,519.33
  4. Step 4: Simplify right side
    13,487.67x = 139,963,229.56
  5. Step 5: Solve for x
    x = 139,963,229.56/13,487.67
  6. Step 6: Final answer
    x = 10,377.12

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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.