Home / 12,961.40-19,429.30-6,724.60

Finding the Fourth Proportional to 12,961.40, 19,429.30 and 6,724.60

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Solution

The fourth proportional to 12,961.40, 19,429.30 and 6,724.60 is: 10,080.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.40 : 19,429.30 = 6,724.60 : x
  2. Step 2: Convert to fraction form
    12,961.40/19,429.30 = 6,724.60/x
  3. Step 3: Cross multiply
    12,961.40x = 19,429.30 × 6,724.60
  4. Step 4: Simplify right side
    12,961.40x = 130,654,270.78
  5. Step 5: Solve for x
    x = 130,654,270.78/12,961.40
  6. Step 6: Final answer
    x = 10,080.26

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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.