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Finding the Fourth Proportional to 28,714.52, 43,066.92 and 7,938.08

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Solution

The fourth proportional to 28,714.52, 43,066.92 and 7,938.08 is: 11,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,714.52 : 43,066.92 = 7,938.08 : x
  2. Step 2: Convert to fraction form
    28,714.52/43,066.92 = 7,938.08/x
  3. Step 3: Cross multiply
    28,714.52x = 43,066.92 × 7,938.08
  4. Step 4: Simplify right side
    28,714.52x = 341,868,656.31
  5. Step 5: Solve for x
    x = 341,868,656.31/28,714.52
  6. Step 6: Final answer
    x = 11,905.78

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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.