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Finding the Fourth Proportional to 20,603, 30,903.06 and 10,747.84

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Solution

The fourth proportional to 20,603, 30,903.06 and 10,747.84 is: 16,121.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603 : 30,903.06 = 10,747.84 : x
  2. Step 2: Convert to fraction form
    20,603/30,903.06 = 10,747.84/x
  3. Step 3: Cross multiply
    20,603x = 30,903.06 × 10,747.84
  4. Step 4: Simplify right side
    20,603x = 332,141,144.39
  5. Step 5: Solve for x
    x = 332,141,144.39/20,603
  6. Step 6: Final answer
    x = 16,121.01

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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.