Home / 21,743.04-30,004.92-12,791.28

Finding the Fourth Proportional to 21,743.04, 30,004.92 and 12,791.28

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Solution

The fourth proportional to 21,743.04, 30,004.92 and 12,791.28 is: 17,651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,743.04 : 30,004.92 = 12,791.28 : x
  2. Step 2: Convert to fraction form
    21,743.04/30,004.92 = 12,791.28/x
  3. Step 3: Cross multiply
    21,743.04x = 30,004.92 × 12,791.28
  4. Step 4: Simplify right side
    21,743.04x = 383,801,333.10
  5. Step 5: Solve for x
    x = 383,801,333.10/21,743.04
  6. Step 6: Final answer
    x = 17,651.69

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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.