Home / 20,078.46-30,136.39-10,225.15

Finding the Fourth Proportional to 20,078.46, 30,136.39 and 10,225.15

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Solution

The fourth proportional to 20,078.46, 30,136.39 and 10,225.15 is: 15,347.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.46 : 30,136.39 = 10,225.15 : x
  2. Step 2: Convert to fraction form
    20,078.46/30,136.39 = 10,225.15/x
  3. Step 3: Cross multiply
    20,078.46x = 30,136.39 × 10,225.15
  4. Step 4: Simplify right side
    20,078.46x = 308,149,007.30
  5. Step 5: Solve for x
    x = 308,149,007.30/20,078.46
  6. Step 6: Final answer
    x = 15,347.24

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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.