Home / 13,859.80-19,140.78-10,684.60

Finding the Fourth Proportional to 13,859.80, 19,140.78 and 10,684.60

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Solution

The fourth proportional to 13,859.80, 19,140.78 and 10,684.60 is: 14,755.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.80 : 19,140.78 = 10,684.60 : x
  2. Step 2: Convert to fraction form
    13,859.80/19,140.78 = 10,684.60/x
  3. Step 3: Cross multiply
    13,859.80x = 19,140.78 × 10,684.60
  4. Step 4: Simplify right side
    13,859.80x = 204,511,577.99
  5. Step 5: Solve for x
    x = 204,511,577.99/13,859.80
  6. Step 6: Final answer
    x = 14,755.74

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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.