Home / 21,757.38-30,020.04-12,805.26

Finding the Fourth Proportional to 21,757.38, 30,020.04 and 12,805.26

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Solution

The fourth proportional to 21,757.38, 30,020.04 and 12,805.26 is: 17,668.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,757.38 : 30,020.04 = 12,805.26 : x
  2. Step 2: Convert to fraction form
    21,757.38/30,020.04 = 12,805.26/x
  3. Step 3: Cross multiply
    21,757.38x = 30,020.04 × 12,805.26
  4. Step 4: Simplify right side
    21,757.38x = 384,414,417.41
  5. Step 5: Solve for x
    x = 384,414,417.41/21,757.38
  6. Step 6: Final answer
    x = 17,668.23

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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.