Home / 20,651.04-30,969.90-8,168.76

Finding the Fourth Proportional to 20,651.04, 30,969.90 and 8,168.76

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Solution

The fourth proportional to 20,651.04, 30,969.90 and 8,168.76 is: 12,250.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.04 : 30,969.90 = 8,168.76 : x
  2. Step 2: Convert to fraction form
    20,651.04/30,969.90 = 8,168.76/x
  3. Step 3: Cross multiply
    20,651.04x = 30,969.90 × 8,168.76
  4. Step 4: Simplify right side
    20,651.04x = 252,985,680.32
  5. Step 5: Solve for x
    x = 252,985,680.32/20,651.04
  6. Step 6: Final answer
    x = 12,250.51

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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.