Home / 20,072.85-27,698.25-11,118.12

Finding the Fourth Proportional to 20,072.85, 27,698.25 and 11,118.12

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Solution

The fourth proportional to 20,072.85, 27,698.25 and 11,118.12 is: 15,341.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.85 : 27,698.25 = 11,118.12 : x
  2. Step 2: Convert to fraction form
    20,072.85/27,698.25 = 11,118.12/x
  3. Step 3: Cross multiply
    20,072.85x = 27,698.25 × 11,118.12
  4. Step 4: Simplify right side
    20,072.85x = 307,952,467.29
  5. Step 5: Solve for x
    x = 307,952,467.29/20,072.85
  6. Step 6: Final answer
    x = 15,341.74

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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.