Home / 20,351.86-30,491.90-17,824.84

Finding the Fourth Proportional to 20,351.86, 30,491.90 and 17,824.84

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Solution

The fourth proportional to 20,351.86, 30,491.90 and 17,824.84 is: 26,705.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.86 : 30,491.90 = 17,824.84 : x
  2. Step 2: Convert to fraction form
    20,351.86/30,491.90 = 17,824.84/x
  3. Step 3: Cross multiply
    20,351.86x = 30,491.90 × 17,824.84
  4. Step 4: Simplify right side
    20,351.86x = 543,513,238.80
  5. Step 5: Solve for x
    x = 543,513,238.80/20,351.86
  6. Step 6: Final answer
    x = 26,705.83

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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.