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Finding the Fourth Proportional to 28,682.54, 43,009.03 and 12,874.02

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Solution

The fourth proportional to 28,682.54, 43,009.03 and 12,874.02 is: 19,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682.54 : 43,009.03 = 12,874.02 : x
  2. Step 2: Convert to fraction form
    28,682.54/43,009.03 = 12,874.02/x
  3. Step 3: Cross multiply
    28,682.54x = 43,009.03 × 12,874.02
  4. Step 4: Simplify right side
    28,682.54x = 553,699,063.90
  5. Step 5: Solve for x
    x = 553,699,063.90/28,682.54
  6. Step 6: Final answer
    x = 19,304.40

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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.