Home / 21,765.36-30,033.60-12,333.60

Finding the Fourth Proportional to 21,765.36, 30,033.60 and 12,333.60

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Solution

The fourth proportional to 21,765.36, 30,033.60 and 12,333.60 is: 17,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.36 : 30,033.60 = 12,333.60 : x
  2. Step 2: Convert to fraction form
    21,765.36/30,033.60 = 12,333.60/x
  3. Step 3: Cross multiply
    21,765.36x = 30,033.60 × 12,333.60
  4. Step 4: Simplify right side
    21,765.36x = 370,422,408.96
  5. Step 5: Solve for x
    x = 370,422,408.96/21,765.36
  6. Step 6: Final answer
    x = 17,018.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.