Home / 12,450.78-18,676.49-4,131.36

Finding the Fourth Proportional to 12,450.78, 18,676.49 and 4,131.36

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Solution

The fourth proportional to 12,450.78, 18,676.49 and 4,131.36 is: 6,197.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450.78 : 18,676.49 = 4,131.36 : x
  2. Step 2: Convert to fraction form
    12,450.78/18,676.49 = 4,131.36/x
  3. Step 3: Cross multiply
    12,450.78x = 18,676.49 × 4,131.36
  4. Step 4: Simplify right side
    12,450.78x = 77,159,283.07
  5. Step 5: Solve for x
    x = 77,159,283.07/12,450.78
  6. Step 6: Final answer
    x = 6,197.14

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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.