Home / 13,284.84-18,200.31-12,786.60

Finding the Fourth Proportional to 13,284.84, 18,200.31 and 12,786.60

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Solution

The fourth proportional to 13,284.84, 18,200.31 and 12,786.60 is: 17,517.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,284.84 : 18,200.31 = 12,786.60 : x
  2. Step 2: Convert to fraction form
    13,284.84/18,200.31 = 12,786.60/x
  3. Step 3: Cross multiply
    13,284.84x = 18,200.31 × 12,786.60
  4. Step 4: Simplify right side
    13,284.84x = 232,720,083.85
  5. Step 5: Solve for x
    x = 232,720,083.85/13,284.84
  6. Step 6: Final answer
    x = 17,517.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.