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Finding the Fourth Proportional to 28,988, 43,489.60 and 9,266.96

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Solution

The fourth proportional to 28,988, 43,489.60 and 9,266.96 is: 13,902.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,988 : 43,489.60 = 9,266.96 : x
  2. Step 2: Convert to fraction form
    28,988/43,489.60 = 9,266.96/x
  3. Step 3: Cross multiply
    28,988x = 43,489.60 × 9,266.96
  4. Step 4: Simplify right side
    28,988x = 403,016,383.62
  5. Step 5: Solve for x
    x = 403,016,383.62/28,988
  6. Step 6: Final answer
    x = 13,902.87

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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.