Home / 12,014.40-18,010.80-7,629.60

Finding the Fourth Proportional to 12,014.40, 18,010.80 and 7,629.60

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Solution

The fourth proportional to 12,014.40, 18,010.80 and 7,629.60 is: 11,437.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,014.40 : 18,010.80 = 7,629.60 : x
  2. Step 2: Convert to fraction form
    12,014.40/18,010.80 = 7,629.60/x
  3. Step 3: Cross multiply
    12,014.40x = 18,010.80 × 7,629.60
  4. Step 4: Simplify right side
    12,014.40x = 137,415,199.68
  5. Step 5: Solve for x
    x = 137,415,199.68/12,014.40
  6. Step 6: Final answer
    x = 11,437.54

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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.