Home / 12,278.21-18,425.38-6,735.45

Finding the Fourth Proportional to 12,278.21, 18,425.38 and 6,735.45

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Solution

The fourth proportional to 12,278.21, 18,425.38 and 6,735.45 is: 10,107.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.21 : 18,425.38 = 6,735.45 : x
  2. Step 2: Convert to fraction form
    12,278.21/18,425.38 = 6,735.45/x
  3. Step 3: Cross multiply
    12,278.21x = 18,425.38 × 6,735.45
  4. Step 4: Simplify right side
    12,278.21x = 124,103,099.92
  5. Step 5: Solve for x
    x = 124,103,099.92/12,278.21
  6. Step 6: Final answer
    x = 10,107.59

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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.