Home / 13,453.67-20,186.31-5,136.19

Finding the Fourth Proportional to 13,453.67, 20,186.31 and 5,136.19

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Solution

The fourth proportional to 13,453.67, 20,186.31 and 5,136.19 is: 7,706.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.67 : 20,186.31 = 5,136.19 : x
  2. Step 2: Convert to fraction form
    13,453.67/20,186.31 = 5,136.19/x
  3. Step 3: Cross multiply
    13,453.67x = 20,186.31 × 5,136.19
  4. Step 4: Simplify right side
    13,453.67x = 103,680,723.56
  5. Step 5: Solve for x
    x = 103,680,723.56/13,453.67
  6. Step 6: Final answer
    x = 7,706.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.