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Finding the Fourth Proportional to 19,220.77, 28,835.04 and 8,127.44

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Solution

The fourth proportional to 19,220.77, 28,835.04 and 8,127.44 is: 12,192.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.77 : 28,835.04 = 8,127.44 : x
  2. Step 2: Convert to fraction form
    19,220.77/28,835.04 = 8,127.44/x
  3. Step 3: Cross multiply
    19,220.77x = 28,835.04 × 8,127.44
  4. Step 4: Simplify right side
    19,220.77x = 234,355,051.93
  5. Step 5: Solve for x
    x = 234,355,051.93/19,220.77
  6. Step 6: Final answer
    x = 12,192.80

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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.