Home / 20,678.82-28,536.75-11,247.33

Finding the Fourth Proportional to 20,678.82, 28,536.75 and 11,247.33

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Solution

The fourth proportional to 20,678.82, 28,536.75 and 11,247.33 is: 15,521.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.82 : 28,536.75 = 11,247.33 : x
  2. Step 2: Convert to fraction form
    20,678.82/28,536.75 = 11,247.33/x
  3. Step 3: Cross multiply
    20,678.82x = 28,536.75 × 11,247.33
  4. Step 4: Simplify right side
    20,678.82x = 320,962,244.38
  5. Step 5: Solve for x
    x = 320,962,244.38/20,678.82
  6. Step 6: Final answer
    x = 15,521.30

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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.