Home / 12,790.20-19,190.10-5,004.60

Finding the Fourth Proportional to 12,790.20, 19,190.10 and 5,004.60

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Solution

The fourth proportional to 12,790.20, 19,190.10 and 5,004.60 is: 7,508.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.20 : 19,190.10 = 5,004.60 : x
  2. Step 2: Convert to fraction form
    12,790.20/19,190.10 = 5,004.60/x
  3. Step 3: Cross multiply
    12,790.20x = 19,190.10 × 5,004.60
  4. Step 4: Simplify right side
    12,790.20x = 96,038,774.46
  5. Step 5: Solve for x
    x = 96,038,774.46/12,790.20
  6. Step 6: Final answer
    x = 7,508.78

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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.