Home / 20,609.43-30,893.27-8,138.25

Finding the Fourth Proportional to 20,609.43, 30,893.27 and 8,138.25

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Solution

The fourth proportional to 20,609.43, 30,893.27 and 8,138.25 is: 12,199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.43 : 30,893.27 = 8,138.25 : x
  2. Step 2: Convert to fraction form
    20,609.43/30,893.27 = 8,138.25/x
  3. Step 3: Cross multiply
    20,609.43x = 30,893.27 × 8,138.25
  4. Step 4: Simplify right side
    20,609.43x = 251,417,113.89
  5. Step 5: Solve for x
    x = 251,417,113.89/20,609.43
  6. Step 6: Final answer
    x = 12,199.13

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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.