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Finding the Fourth Proportional to 34,283.78, 47,310.99 and 19,379.78

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Solution

The fourth proportional to 34,283.78, 47,310.99 and 19,379.78 is: 26,743.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,283.78 : 47,310.99 = 19,379.78 : x
  2. Step 2: Convert to fraction form
    34,283.78/47,310.99 = 19,379.78/x
  3. Step 3: Cross multiply
    34,283.78x = 47,310.99 × 19,379.78
  4. Step 4: Simplify right side
    34,283.78x = 916,876,577.78
  5. Step 5: Solve for x
    x = 916,876,577.78/34,283.78
  6. Step 6: Final answer
    x = 26,743.74

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1.5x scale

Why These Related Problems?

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