Home / 12,324.72-18,485.64-3,090

Finding the Fourth Proportional to 12,324.72, 18,485.64 and 3,090

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Solution

The fourth proportional to 12,324.72, 18,485.64 and 3,090 is: 4,634.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,324.72 : 18,485.64 = 3,090 : x
  2. Step 2: Convert to fraction form
    12,324.72/18,485.64 = 3,090/x
  3. Step 3: Cross multiply
    12,324.72x = 18,485.64 × 3,090
  4. Step 4: Simplify right side
    12,324.72x = 57,120,627.60
  5. Step 5: Solve for x
    x = 57,120,627.60/12,324.72
  6. Step 6: Final answer
    x = 4,634.64

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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.