Home / 12,735.21-19,122.81-10,786.40

Finding the Fourth Proportional to 12,735.21, 19,122.81 and 10,786.40

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Solution

The fourth proportional to 12,735.21, 19,122.81 and 10,786.40 is: 16,196.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,735.21 : 19,122.81 = 10,786.40 : x
  2. Step 2: Convert to fraction form
    12,735.21/19,122.81 = 10,786.40/x
  3. Step 3: Cross multiply
    12,735.21x = 19,122.81 × 10,786.40
  4. Step 4: Simplify right side
    12,735.21x = 206,266,182.17
  5. Step 5: Solve for x
    x = 206,266,182.17/12,735.21
  6. Step 6: Final answer
    x = 16,196.53

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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.