Home / 20,072.97-27,705.30-13,358.88

Finding the Fourth Proportional to 20,072.97, 27,705.30 and 13,358.88

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Solution

The fourth proportional to 20,072.97, 27,705.30 and 13,358.88 is: 18,438.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.97 : 27,705.30 = 13,358.88 : x
  2. Step 2: Convert to fraction form
    20,072.97/27,705.30 = 13,358.88/x
  3. Step 3: Cross multiply
    20,072.97x = 27,705.30 × 13,358.88
  4. Step 4: Simplify right side
    20,072.97x = 370,111,778.06
  5. Step 5: Solve for x
    x = 370,111,778.06/20,072.97
  6. Step 6: Final answer
    x = 18,438.32

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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.