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Finding the Fourth Proportional to 20,579.77, 30,866.44 and 6,537.95

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Solution

The fourth proportional to 20,579.77, 30,866.44 and 6,537.95 is: 9,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.77 : 30,866.44 = 6,537.95 : x
  2. Step 2: Convert to fraction form
    20,579.77/30,866.44 = 6,537.95/x
  3. Step 3: Cross multiply
    20,579.77x = 30,866.44 × 6,537.95
  4. Step 4: Simplify right side
    20,579.77x = 201,803,302.22
  5. Step 5: Solve for x
    x = 201,803,302.22/20,579.77
  6. Step 6: Final answer
    x = 9,805.91

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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.