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Finding the Fourth Proportional to 34,861.61, 48,109.74 and 18,947.09

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Solution

The fourth proportional to 34,861.61, 48,109.74 and 18,947.09 is: 26,147.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,861.61 : 48,109.74 = 18,947.09 : x
  2. Step 2: Convert to fraction form
    34,861.61/48,109.74 = 18,947.09/x
  3. Step 3: Cross multiply
    34,861.61x = 48,109.74 × 18,947.09
  4. Step 4: Simplify right side
    34,861.61x = 911,539,573.66
  5. Step 5: Solve for x
    x = 911,539,573.66/34,861.61
  6. Step 6: Final answer
    x = 26,147.37

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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.