Home / 20,499.04-30,709.68-12,161.44

Finding the Fourth Proportional to 20,499.04, 30,709.68 and 12,161.44

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Solution

The fourth proportional to 20,499.04, 30,709.68 and 12,161.44 is: 18,219.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.04 : 30,709.68 = 12,161.44 : x
  2. Step 2: Convert to fraction form
    20,499.04/30,709.68 = 12,161.44/x
  3. Step 3: Cross multiply
    20,499.04x = 30,709.68 × 12,161.44
  4. Step 4: Simplify right side
    20,499.04x = 373,473,930.74
  5. Step 5: Solve for x
    x = 373,473,930.74/20,499.04
  6. Step 6: Final answer
    x = 18,219.09

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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.