Home / 20,204.82-30,312.69-7,718.26

Finding the Fourth Proportional to 20,204.82, 30,312.69 and 7,718.26

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Solution

The fourth proportional to 20,204.82, 30,312.69 and 7,718.26 is: 11,579.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,204.82 : 30,312.69 = 7,718.26 : x
  2. Step 2: Convert to fraction form
    20,204.82/30,312.69 = 7,718.26/x
  3. Step 3: Cross multiply
    20,204.82x = 30,312.69 × 7,718.26
  4. Step 4: Simplify right side
    20,204.82x = 233,961,222.72
  5. Step 5: Solve for x
    x = 233,961,222.72/20,204.82
  6. Step 6: Final answer
    x = 11,579.48

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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.