Home / 20,639.22-30,977.06-11,287.77

Finding the Fourth Proportional to 20,639.22, 30,977.06 and 11,287.77

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Solution

The fourth proportional to 20,639.22, 30,977.06 and 11,287.77 is: 16,941.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.22 : 30,977.06 = 11,287.77 : x
  2. Step 2: Convert to fraction form
    20,639.22/30,977.06 = 11,287.77/x
  3. Step 3: Cross multiply
    20,639.22x = 30,977.06 × 11,287.77
  4. Step 4: Simplify right side
    20,639.22x = 349,661,872.12
  5. Step 5: Solve for x
    x = 349,661,872.12/20,639.22
  6. Step 6: Final answer
    x = 16,941.62

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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.