Home / 12,236.80-18,342.40-6,681.60

Finding the Fourth Proportional to 12,236.80, 18,342.40 and 6,681.60

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Solution

The fourth proportional to 12,236.80, 18,342.40 and 6,681.60 is: 10,015.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,236.80 : 18,342.40 = 6,681.60 : x
  2. Step 2: Convert to fraction form
    12,236.80/18,342.40 = 6,681.60/x
  3. Step 3: Cross multiply
    12,236.80x = 18,342.40 × 6,681.60
  4. Step 4: Simplify right side
    12,236.80x = 122,556,579.84
  5. Step 5: Solve for x
    x = 122,556,579.84/12,236.80
  6. Step 6: Final answer
    x = 10,015.41

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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.