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Finding the Fourth Proportional to 28,669.60, 43,006.43 and 7,609.47

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Solution

The fourth proportional to 28,669.60, 43,006.43 and 7,609.47 is: 11,414.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,669.60 : 43,006.43 = 7,609.47 : x
  2. Step 2: Convert to fraction form
    28,669.60/43,006.43 = 7,609.47/x
  3. Step 3: Cross multiply
    28,669.60x = 43,006.43 × 7,609.47
  4. Step 4: Simplify right side
    28,669.60x = 327,256,138.89
  5. Step 5: Solve for x
    x = 327,256,138.89/28,669.60
  6. Step 6: Final answer
    x = 11,414.74

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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.