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Finding the Fourth Proportional to 25,994.59, 38,964.71 and 18,861.59

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Solution

The fourth proportional to 25,994.59, 38,964.71 and 18,861.59 is: 28,272.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,994.59 : 38,964.71 = 18,861.59 : x
  2. Step 2: Convert to fraction form
    25,994.59/38,964.71 = 18,861.59/x
  3. Step 3: Cross multiply
    25,994.59x = 38,964.71 × 18,861.59
  4. Step 4: Simplify right side
    25,994.59x = 734,936,529.05
  5. Step 5: Solve for x
    x = 734,936,529.05/25,994.59
  6. Step 6: Final answer
    x = 28,272.68

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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.