Home / 20,343.23-30,519.71-8,490.41

Finding the Fourth Proportional to 20,343.23, 30,519.71 and 8,490.41

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Solution

The fourth proportional to 20,343.23, 30,519.71 and 8,490.41 is: 12,737.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.23 : 30,519.71 = 8,490.41 : x
  2. Step 2: Convert to fraction form
    20,343.23/30,519.71 = 8,490.41/x
  3. Step 3: Cross multiply
    20,343.23x = 30,519.71 × 8,490.41
  4. Step 4: Simplify right side
    20,343.23x = 259,124,850.98
  5. Step 5: Solve for x
    x = 259,124,850.98/20,343.23
  6. Step 6: Final answer
    x = 12,737.65

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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.