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Finding the Fourth Proportional to 34,694.91, 47,879.10 and 18,779.34

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Solution

The fourth proportional to 34,694.91, 47,879.10 and 18,779.34 is: 25,915.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,694.91 : 47,879.10 = 18,779.34 : x
  2. Step 2: Convert to fraction form
    34,694.91/47,879.10 = 18,779.34/x
  3. Step 3: Cross multiply
    34,694.91x = 47,879.10 × 18,779.34
  4. Step 4: Simplify right side
    34,694.91x = 899,137,897.79
  5. Step 5: Solve for x
    x = 899,137,897.79/34,694.91
  6. Step 6: Final answer
    x = 25,915.56

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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.