Home / 20,191.68-30,290.32-5,401.12

Finding the Fourth Proportional to 20,191.68, 30,290.32 and 5,401.12

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Solution

The fourth proportional to 20,191.68, 30,290.32 and 5,401.12 is: 8,102.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.68 : 30,290.32 = 5,401.12 : x
  2. Step 2: Convert to fraction form
    20,191.68/30,290.32 = 5,401.12/x
  3. Step 3: Cross multiply
    20,191.68x = 30,290.32 × 5,401.12
  4. Step 4: Simplify right side
    20,191.68x = 163,601,653.16
  5. Step 5: Solve for x
    x = 163,601,653.16/20,191.68
  6. Step 6: Final answer
    x = 8,102.43

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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.