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Finding the Fourth Proportional to 18,944.41, 28,415.79 and 10,196.41

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Solution

The fourth proportional to 18,944.41, 28,415.79 and 10,196.41 is: 15,294.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,944.41 : 28,415.79 = 10,196.41 : x
  2. Step 2: Convert to fraction form
    18,944.41/28,415.79 = 10,196.41/x
  3. Step 3: Cross multiply
    18,944.41x = 28,415.79 × 10,196.41
  4. Step 4: Simplify right side
    18,944.41x = 289,738,903.23
  5. Step 5: Solve for x
    x = 289,738,903.23/18,944.41
  6. Step 6: Final answer
    x = 15,294.17

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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.