Home / 18,738.35-25,861.64-11,185

Finding the Fourth Proportional to 18,738.35, 25,861.64 and 11,185

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Solution

The fourth proportional to 18,738.35, 25,861.64 and 11,185 is: 15,436.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.35 : 25,861.64 = 11,185 : x
  2. Step 2: Convert to fraction form
    18,738.35/25,861.64 = 11,185/x
  3. Step 3: Cross multiply
    18,738.35x = 25,861.64 × 11,185
  4. Step 4: Simplify right side
    18,738.35x = 289,262,443.40
  5. Step 5: Solve for x
    x = 289,262,443.40/18,738.35
  6. Step 6: Final answer
    x = 15,436.92

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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.