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Finding the Fourth Proportional to 25,899.07, 38,847.46 and 8,129.31

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Solution

The fourth proportional to 25,899.07, 38,847.46 and 8,129.31 is: 12,193.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,899.07 : 38,847.46 = 8,129.31 : x
  2. Step 2: Convert to fraction form
    25,899.07/38,847.46 = 8,129.31/x
  3. Step 3: Cross multiply
    25,899.07x = 38,847.46 × 8,129.31
  4. Step 4: Simplify right side
    25,899.07x = 315,803,045.05
  5. Step 5: Solve for x
    x = 315,803,045.05/25,899.07
  6. Step 6: Final answer
    x = 12,193.61

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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.