Home / 17,976.12-26,940.94-12,420.60

Finding the Fourth Proportional to 17,976.12, 26,940.94 and 12,420.60

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Solution

The fourth proportional to 17,976.12, 26,940.94 and 12,420.60 is: 18,614.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,976.12 : 26,940.94 = 12,420.60 : x
  2. Step 2: Convert to fraction form
    17,976.12/26,940.94 = 12,420.60/x
  3. Step 3: Cross multiply
    17,976.12x = 26,940.94 × 12,420.60
  4. Step 4: Simplify right side
    17,976.12x = 334,622,639.36
  5. Step 5: Solve for x
    x = 334,622,639.36/17,976.12
  6. Step 6: Final answer
    x = 18,614.84

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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.