Home / 27,782.43-38,293.88-20,706.27

Finding the Fourth Proportional to 27,782.43, 38,293.88 and 20,706.27

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Solution

The fourth proportional to 27,782.43, 38,293.88 and 20,706.27 is: 28,540.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,782.43 : 38,293.88 = 20,706.27 : x
  2. Step 2: Convert to fraction form
    27,782.43/38,293.88 = 20,706.27/x
  3. Step 3: Cross multiply
    27,782.43x = 38,293.88 × 20,706.27
  4. Step 4: Simplify right side
    27,782.43x = 792,923,315.10
  5. Step 5: Solve for x
    x = 792,923,315.10/27,782.43
  6. Step 6: Final answer
    x = 28,540.46

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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.