Home / 20,072.99-30,103.11-18,762.62

Finding the Fourth Proportional to 20,072.99, 30,103.11 and 18,762.62

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Solution

The fourth proportional to 20,072.99, 30,103.11 and 18,762.62 is: 28,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.99 : 30,103.11 = 18,762.62 : x
  2. Step 2: Convert to fraction form
    20,072.99/30,103.11 = 18,762.62/x
  3. Step 3: Cross multiply
    20,072.99x = 30,103.11 × 18,762.62
  4. Step 4: Simplify right side
    20,072.99x = 564,813,063.23
  5. Step 5: Solve for x
    x = 564,813,063.23/20,072.99
  6. Step 6: Final answer
    x = 28,137.96

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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.