Home / 12,789.96-19,190.07-6,215.46

Finding the Fourth Proportional to 12,789.96, 19,190.07 and 6,215.46

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Solution

The fourth proportional to 12,789.96, 19,190.07 and 6,215.46 is: 9,325.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.96 : 19,190.07 = 6,215.46 : x
  2. Step 2: Convert to fraction form
    12,789.96/19,190.07 = 6,215.46/x
  3. Step 3: Cross multiply
    12,789.96x = 19,190.07 × 6,215.46
  4. Step 4: Simplify right side
    12,789.96x = 119,275,112.48
  5. Step 5: Solve for x
    x = 119,275,112.48/12,789.96
  6. Step 6: Final answer
    x = 9,325.68

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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.