Home / 20,579.13-30,866.31-8,734.68

Finding the Fourth Proportional to 20,579.13, 30,866.31 and 8,734.68

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Solution

The fourth proportional to 20,579.13, 30,866.31 and 8,734.68 is: 13,101.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.13 : 30,866.31 = 8,734.68 : x
  2. Step 2: Convert to fraction form
    20,579.13/30,866.31 = 8,734.68/x
  3. Step 3: Cross multiply
    20,579.13x = 30,866.31 × 8,734.68
  4. Step 4: Simplify right side
    20,579.13x = 269,607,340.63
  5. Step 5: Solve for x
    x = 269,607,340.63/20,579.13
  6. Step 6: Final answer
    x = 13,101.01

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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.