Home / 20,681.43-28,542.69-19,414.59

Finding the Fourth Proportional to 20,681.43, 28,542.69 and 19,414.59

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Solution

The fourth proportional to 20,681.43, 28,542.69 and 19,414.59 is: 26,794.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.43 : 28,542.69 = 19,414.59 : x
  2. Step 2: Convert to fraction form
    20,681.43/28,542.69 = 19,414.59/x
  3. Step 3: Cross multiply
    20,681.43x = 28,542.69 × 19,414.59
  4. Step 4: Simplify right side
    20,681.43x = 554,144,623.85
  5. Step 5: Solve for x
    x = 554,144,623.85/20,681.43
  6. Step 6: Final answer
    x = 26,794.31

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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.