Home / 20,086.08-30,143.03-6,938.56

Finding the Fourth Proportional to 20,086.08, 30,143.03 and 6,938.56

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Solution

The fourth proportional to 20,086.08, 30,143.03 and 6,938.56 is: 10,412.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.08 : 30,143.03 = 6,938.56 : x
  2. Step 2: Convert to fraction form
    20,086.08/30,143.03 = 6,938.56/x
  3. Step 3: Cross multiply
    20,086.08x = 30,143.03 × 6,938.56
  4. Step 4: Simplify right side
    20,086.08x = 209,149,222.24
  5. Step 5: Solve for x
    x = 209,149,222.24/20,086.08
  6. Step 6: Final answer
    x = 10,412.65

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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.