Home / 30,906.56-46,355.69-8,721.72

Finding the Fourth Proportional to 30,906.56, 46,355.69 and 8,721.72

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Solution

The fourth proportional to 30,906.56, 46,355.69 and 8,721.72 is: 13,081.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,906.56 : 46,355.69 = 8,721.72 : x
  2. Step 2: Convert to fraction form
    30,906.56/46,355.69 = 8,721.72/x
  3. Step 3: Cross multiply
    30,906.56x = 46,355.69 × 8,721.72
  4. Step 4: Simplify right side
    30,906.56x = 404,301,370.39
  5. Step 5: Solve for x
    x = 404,301,370.39/30,906.56
  6. Step 6: Final answer
    x = 13,081.41

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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.