Home / 20,623.43-30,914.01-8,138.41

Finding the Fourth Proportional to 20,623.43, 30,914.01 and 8,138.41

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Solution

The fourth proportional to 20,623.43, 30,914.01 and 8,138.41 is: 12,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.43 : 30,914.01 = 8,138.41 : x
  2. Step 2: Convert to fraction form
    20,623.43/30,914.01 = 8,138.41/x
  3. Step 3: Cross multiply
    20,623.43x = 30,914.01 × 8,138.41
  4. Step 4: Simplify right side
    20,623.43x = 251,590,810.84
  5. Step 5: Solve for x
    x = 251,590,810.84/20,623.43
  6. Step 6: Final answer
    x = 12,199.27

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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.