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Finding the Fourth Proportional to 34,755, 47,961.90 and 18,839.40

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Solution

The fourth proportional to 34,755, 47,961.90 and 18,839.40 is: 25,998.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,755 : 47,961.90 = 18,839.40 : x
  2. Step 2: Convert to fraction form
    34,755/47,961.90 = 18,839.40/x
  3. Step 3: Cross multiply
    34,755x = 47,961.90 × 18,839.40
  4. Step 4: Simplify right side
    34,755x = 903,573,418.86
  5. Step 5: Solve for x
    x = 903,573,418.86/34,755
  6. Step 6: Final answer
    x = 25,998.37

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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.