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Finding the Fourth Proportional to 18,697.95, 25,819.70 and 11,636.37

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Solution

The fourth proportional to 18,697.95, 25,819.70 and 11,636.37 is: 16,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.95 : 25,819.70 = 11,636.37 : x
  2. Step 2: Convert to fraction form
    18,697.95/25,819.70 = 11,636.37/x
  3. Step 3: Cross multiply
    18,697.95x = 25,819.70 × 11,636.37
  4. Step 4: Simplify right side
    18,697.95x = 300,447,524.31
  5. Step 5: Solve for x
    x = 300,447,524.31/18,697.95
  6. Step 6: Final answer
    x = 16,068.47

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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.