Home / 13,090.72-19,629.53-6,520.54

Finding the Fourth Proportional to 13,090.72, 19,629.53 and 6,520.54

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Solution

The fourth proportional to 13,090.72, 19,629.53 and 6,520.54 is: 9,777.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.72 : 19,629.53 = 6,520.54 : x
  2. Step 2: Convert to fraction form
    13,090.72/19,629.53 = 6,520.54/x
  3. Step 3: Cross multiply
    13,090.72x = 19,629.53 × 6,520.54
  4. Step 4: Simplify right side
    13,090.72x = 127,995,004.80
  5. Step 5: Solve for x
    x = 127,995,004.80/13,090.72
  6. Step 6: Final answer
    x = 9,777.54

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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.