Home / 20,145.74-30,221.87-8,462.30

Finding the Fourth Proportional to 20,145.74, 30,221.87 and 8,462.30

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Solution

The fourth proportional to 20,145.74, 30,221.87 and 8,462.30 is: 12,694.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.74 : 30,221.87 = 8,462.30 : x
  2. Step 2: Convert to fraction form
    20,145.74/30,221.87 = 8,462.30/x
  3. Step 3: Cross multiply
    20,145.74x = 30,221.87 × 8,462.30
  4. Step 4: Simplify right side
    20,145.74x = 255,746,337.08
  5. Step 5: Solve for x
    x = 255,746,337.08/20,145.74
  6. Step 6: Final answer
    x = 12,694.81

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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.