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Finding the Fourth Proportional to 30,876.93, 42,609.60 and 17,447.89

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Solution

The fourth proportional to 30,876.93, 42,609.60 and 17,447.89 is: 24,077.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.93 : 42,609.60 = 17,447.89 : x
  2. Step 2: Convert to fraction form
    30,876.93/42,609.60 = 17,447.89/x
  3. Step 3: Cross multiply
    30,876.93x = 42,609.60 × 17,447.89
  4. Step 4: Simplify right side
    30,876.93x = 743,447,613.74
  5. Step 5: Solve for x
    x = 743,447,613.74/30,876.93
  6. Step 6: Final answer
    x = 24,077.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.