Home / 12,558.80-18,825.40-7,003.60

Finding the Fourth Proportional to 12,558.80, 18,825.40 and 7,003.60

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Solution

The fourth proportional to 12,558.80, 18,825.40 and 7,003.60 is: 10,498.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.80 : 18,825.40 = 7,003.60 : x
  2. Step 2: Convert to fraction form
    12,558.80/18,825.40 = 7,003.60/x
  3. Step 3: Cross multiply
    12,558.80x = 18,825.40 × 7,003.60
  4. Step 4: Simplify right side
    12,558.80x = 131,845,571.44
  5. Step 5: Solve for x
    x = 131,845,571.44/12,558.80
  6. Step 6: Final answer
    x = 10,498.26

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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.