Home / 13,928.43-20,878.88-5,160.99

Finding the Fourth Proportional to 13,928.43, 20,878.88 and 5,160.99

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Solution

The fourth proportional to 13,928.43, 20,878.88 and 5,160.99 is: 7,736.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.43 : 20,878.88 = 5,160.99 : x
  2. Step 2: Convert to fraction form
    13,928.43/20,878.88 = 5,160.99/x
  3. Step 3: Cross multiply
    13,928.43x = 20,878.88 × 5,160.99
  4. Step 4: Simplify right side
    13,928.43x = 107,755,665.09
  5. Step 5: Solve for x
    x = 107,755,665.09/13,928.43
  6. Step 6: Final answer
    x = 7,736.38

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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.