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Finding the Fourth Proportional to 28,404.03, 42,604.50 and 8,682.58

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Solution

The fourth proportional to 28,404.03, 42,604.50 and 8,682.58 is: 13,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404.03 : 42,604.50 = 8,682.58 : x
  2. Step 2: Convert to fraction form
    28,404.03/42,604.50 = 8,682.58/x
  3. Step 3: Cross multiply
    28,404.03x = 42,604.50 × 8,682.58
  4. Step 4: Simplify right side
    28,404.03x = 369,916,979.61
  5. Step 5: Solve for x
    x = 369,916,979.61/28,404.03
  6. Step 6: Final answer
    x = 13,023.40

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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.