Home / 20,138.03-30,216.69-8,300.42

Finding the Fourth Proportional to 20,138.03, 30,216.69 and 8,300.42

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Solution

The fourth proportional to 20,138.03, 30,216.69 and 8,300.42 is: 12,454.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138.03 : 30,216.69 = 8,300.42 : x
  2. Step 2: Convert to fraction form
    20,138.03/30,216.69 = 8,300.42/x
  3. Step 3: Cross multiply
    20,138.03x = 30,216.69 × 8,300.42
  4. Step 4: Simplify right side
    20,138.03x = 250,811,066.93
  5. Step 5: Solve for x
    x = 250,811,066.93/20,138.03
  6. Step 6: Final answer
    x = 12,454.60

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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.