Home / 20,623.05-30,913.31-8,126.18

Finding the Fourth Proportional to 20,623.05, 30,913.31 and 8,126.18

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Solution

The fourth proportional to 20,623.05, 30,913.31 and 8,126.18 is: 12,180.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.05 : 30,913.31 = 8,126.18 : x
  2. Step 2: Convert to fraction form
    20,623.05/30,913.31 = 8,126.18/x
  3. Step 3: Cross multiply
    20,623.05x = 30,913.31 × 8,126.18
  4. Step 4: Simplify right side
    20,623.05x = 251,206,926.26
  5. Step 5: Solve for x
    x = 251,206,926.26/20,623.05
  6. Step 6: Final answer
    x = 12,180.88

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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.