Home / 20,637.06-30,938.10-8,165.88

Finding the Fourth Proportional to 20,637.06, 30,938.10 and 8,165.88

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Solution

The fourth proportional to 20,637.06, 30,938.10 and 8,165.88 is: 12,241.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.06 : 30,938.10 = 8,165.88 : x
  2. Step 2: Convert to fraction form
    20,637.06/30,938.10 = 8,165.88/x
  3. Step 3: Cross multiply
    20,637.06x = 30,938.10 × 8,165.88
  4. Step 4: Simplify right side
    20,637.06x = 252,636,909.79
  5. Step 5: Solve for x
    x = 252,636,909.79/20,637.06
  6. Step 6: Final answer
    x = 12,241.90

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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.