Home / 20,415.43-30,636.24-11,061.91

Finding the Fourth Proportional to 20,415.43, 30,636.24 and 11,061.91

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Solution

The fourth proportional to 20,415.43, 30,636.24 and 11,061.91 is: 16,599.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.43 : 30,636.24 = 11,061.91 : x
  2. Step 2: Convert to fraction form
    20,415.43/30,636.24 = 11,061.91/x
  3. Step 3: Cross multiply
    20,415.43x = 30,636.24 × 11,061.91
  4. Step 4: Simplify right side
    20,415.43x = 338,895,329.62
  5. Step 5: Solve for x
    x = 338,895,329.62/20,415.43
  6. Step 6: Final answer
    x = 16,599.96

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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.