Home / 12,240.80-18,348.40-6,685.60

Finding the Fourth Proportional to 12,240.80, 18,348.40 and 6,685.60

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Solution

The fourth proportional to 12,240.80, 18,348.40 and 6,685.60 is: 10,021.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.80 : 18,348.40 = 6,685.60 : x
  2. Step 2: Convert to fraction form
    12,240.80/18,348.40 = 6,685.60/x
  3. Step 3: Cross multiply
    12,240.80x = 18,348.40 × 6,685.60
  4. Step 4: Simplify right side
    12,240.80x = 122,670,063.04
  5. Step 5: Solve for x
    x = 122,670,063.04/12,240.80
  6. Step 6: Final answer
    x = 10,021.41

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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.