Home / 12,400.60-17,103.45-8,621.87

Finding the Fourth Proportional to 12,400.60, 17,103.45 and 8,621.87

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Solution

The fourth proportional to 12,400.60, 17,103.45 and 8,621.87 is: 11,891.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.60 : 17,103.45 = 8,621.87 : x
  2. Step 2: Convert to fraction form
    12,400.60/17,103.45 = 8,621.87/x
  3. Step 3: Cross multiply
    12,400.60x = 17,103.45 × 8,621.87
  4. Step 4: Simplify right side
    12,400.60x = 147,463,786.59
  5. Step 5: Solve for x
    x = 147,463,786.59/12,400.60
  6. Step 6: Final answer
    x = 11,891.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.