Home / 12,986.78-19,461-5,949.44

Finding the Fourth Proportional to 12,986.78, 19,461 and 5,949.44

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Solution

The fourth proportional to 12,986.78, 19,461 and 5,949.44 is: 8,915.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.78 : 19,461 = 5,949.44 : x
  2. Step 2: Convert to fraction form
    12,986.78/19,461 = 5,949.44/x
  3. Step 3: Cross multiply
    12,986.78x = 19,461 × 5,949.44
  4. Step 4: Simplify right side
    12,986.78x = 115,781,954.54
  5. Step 5: Solve for x
    x = 115,781,954.54/12,986.78
  6. Step 6: Final answer
    x = 8,915.37

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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.