Home / 12,480.05-18,709.11-5,090.73

Finding the Fourth Proportional to 12,480.05, 18,709.11 and 5,090.73

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Solution

The fourth proportional to 12,480.05, 18,709.11 and 5,090.73 is: 7,631.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.05 : 18,709.11 = 5,090.73 : x
  2. Step 2: Convert to fraction form
    12,480.05/18,709.11 = 5,090.73/x
  3. Step 3: Cross multiply
    12,480.05x = 18,709.11 × 5,090.73
  4. Step 4: Simplify right side
    12,480.05x = 95,243,027.55
  5. Step 5: Solve for x
    x = 95,243,027.55/12,480.05
  6. Step 6: Final answer
    x = 7,631.63

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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.