Home / 13,425.68-20,120.12-10,136.08

Finding the Fourth Proportional to 13,425.68, 20,120.12 and 10,136.08

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Solution

The fourth proportional to 13,425.68, 20,120.12 and 10,136.08 is: 15,190.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.68 : 20,120.12 = 10,136.08 : x
  2. Step 2: Convert to fraction form
    13,425.68/20,120.12 = 10,136.08/x
  3. Step 3: Cross multiply
    13,425.68x = 20,120.12 × 10,136.08
  4. Step 4: Simplify right side
    13,425.68x = 203,939,145.93
  5. Step 5: Solve for x
    x = 203,939,145.93/13,425.68
  6. Step 6: Final answer
    x = 15,190.23

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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.