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Finding the Fourth Proportional to 28,647.04, 42,962.24 and 12,006.62

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Solution

The fourth proportional to 28,647.04, 42,962.24 and 12,006.62 is: 18,006.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.04 : 42,962.24 = 12,006.62 : x
  2. Step 2: Convert to fraction form
    28,647.04/42,962.24 = 12,006.62/x
  3. Step 3: Cross multiply
    28,647.04x = 42,962.24 × 12,006.62
  4. Step 4: Simplify right side
    28,647.04x = 515,831,290.03
  5. Step 5: Solve for x
    x = 515,831,290.03/28,647.04
  6. Step 6: Final answer
    x = 18,006.44

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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.