Home / 20,581.26-30,880.00-8,737.58

Finding the Fourth Proportional to 20,581.26, 30,880.00 and 8,737.58

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Solution

The fourth proportional to 20,581.26, 30,880.00 and 8,737.58 is: 13,109.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.26 : 30,880.00 = 8,737.58 : x
  2. Step 2: Convert to fraction form
    20,581.26/30,880.00 = 8,737.58/x
  3. Step 3: Cross multiply
    20,581.26x = 30,880.00 × 8,737.58
  4. Step 4: Simplify right side
    20,581.26x = 269,816,558.52
  5. Step 5: Solve for x
    x = 269,816,558.52/20,581.26
  6. Step 6: Final answer
    x = 13,109.82

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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.