Home / 12,685.22-19,027.26-3,920.07

Finding the Fourth Proportional to 12,685.22, 19,027.26 and 3,920.07

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Solution

The fourth proportional to 12,685.22, 19,027.26 and 3,920.07 is: 5,879.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685.22 : 19,027.26 = 3,920.07 : x
  2. Step 2: Convert to fraction form
    12,685.22/19,027.26 = 3,920.07/x
  3. Step 3: Cross multiply
    12,685.22x = 19,027.26 × 3,920.07
  4. Step 4: Simplify right side
    12,685.22x = 74,588,191.11
  5. Step 5: Solve for x
    x = 74,588,191.11/12,685.22
  6. Step 6: Final answer
    x = 5,879.93

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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.