Home / 12,913.80-19,388.70-8,262.60

Finding the Fourth Proportional to 12,913.80, 19,388.70 and 8,262.60

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Solution

The fourth proportional to 12,913.80, 19,388.70 and 8,262.60 is: 12,405.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.80 : 19,388.70 = 8,262.60 : x
  2. Step 2: Convert to fraction form
    12,913.80/19,388.70 = 8,262.60/x
  3. Step 3: Cross multiply
    12,913.80x = 19,388.70 × 8,262.60
  4. Step 4: Simplify right side
    12,913.80x = 160,201,072.62
  5. Step 5: Solve for x
    x = 160,201,072.62/12,913.80
  6. Step 6: Final answer
    x = 12,405.42

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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.