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Finding the Fourth Proportional to 19,167.78, 28,741.96 and 8,770.62

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Solution

The fourth proportional to 19,167.78, 28,741.96 and 8,770.62 is: 13,151.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,167.78 : 28,741.96 = 8,770.62 : x
  2. Step 2: Convert to fraction form
    19,167.78/28,741.96 = 8,770.62/x
  3. Step 3: Cross multiply
    19,167.78x = 28,741.96 × 8,770.62
  4. Step 4: Simplify right side
    19,167.78x = 252,084,809.22
  5. Step 5: Solve for x
    x = 252,084,809.22/19,167.78
  6. Step 6: Final answer
    x = 13,151.49

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1.5x scale

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.