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Finding the Fourth Proportional to 25,868.43, 38,806.70 and 8,340.03

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Solution

The fourth proportional to 25,868.43, 38,806.70 and 8,340.03 is: 12,511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,868.43 : 38,806.70 = 8,340.03 : x
  2. Step 2: Convert to fraction form
    25,868.43/38,806.70 = 8,340.03/x
  3. Step 3: Cross multiply
    25,868.43x = 38,806.70 × 8,340.03
  4. Step 4: Simplify right side
    25,868.43x = 323,649,000.50
  5. Step 5: Solve for x
    x = 323,649,000.50/25,868.43
  6. Step 6: Final answer
    x = 12,511.35

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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.