Home / 20,506.68-30,730.32-11,138.76

Finding the Fourth Proportional to 20,506.68, 30,730.32 and 11,138.76

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Solution

The fourth proportional to 20,506.68, 30,730.32 and 11,138.76 is: 16,692.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.68 : 30,730.32 = 11,138.76 : x
  2. Step 2: Convert to fraction form
    20,506.68/30,730.32 = 11,138.76/x
  3. Step 3: Cross multiply
    20,506.68x = 30,730.32 × 11,138.76
  4. Step 4: Simplify right side
    20,506.68x = 342,297,659.20
  5. Step 5: Solve for x
    x = 342,297,659.20/20,506.68
  6. Step 6: Final answer
    x = 16,692.01

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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.