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Finding the Fourth Proportional to 25,967.88, 38,961.09 and 8,437.77

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Solution

The fourth proportional to 25,967.88, 38,961.09 and 8,437.77 is: 12,659.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,967.88 : 38,961.09 = 8,437.77 : x
  2. Step 2: Convert to fraction form
    25,967.88/38,961.09 = 8,437.77/x
  3. Step 3: Cross multiply
    25,967.88x = 38,961.09 × 8,437.77
  4. Step 4: Simplify right side
    25,967.88x = 328,744,716.37
  5. Step 5: Solve for x
    x = 328,744,716.37/25,967.88
  6. Step 6: Final answer
    x = 12,659.67

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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.