Home / 15,791.42-21,782.70-11,537.28

Finding the Fourth Proportional to 15,791.42, 21,782.70 and 11,537.28

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Solution

The fourth proportional to 15,791.42, 21,782.70 and 11,537.28 is: 15,914.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791.42 : 21,782.70 = 11,537.28 : x
  2. Step 2: Convert to fraction form
    15,791.42/21,782.70 = 11,537.28/x
  3. Step 3: Cross multiply
    15,791.42x = 21,782.70 × 11,537.28
  4. Step 4: Simplify right side
    15,791.42x = 251,313,109.06
  5. Step 5: Solve for x
    x = 251,313,109.06/15,791.42
  6. Step 6: Final answer
    x = 15,914.54

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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.