Home / 30,721.44-42,395.22-17,292.72

Finding the Fourth Proportional to 30,721.44, 42,395.22 and 17,292.72

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Solution

The fourth proportional to 30,721.44, 42,395.22 and 17,292.72 is: 23,863.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,721.44 : 42,395.22 = 17,292.72 : x
  2. Step 2: Convert to fraction form
    30,721.44/42,395.22 = 17,292.72/x
  3. Step 3: Cross multiply
    30,721.44x = 42,395.22 × 17,292.72
  4. Step 4: Simplify right side
    30,721.44x = 733,128,668.80
  5. Step 5: Solve for x
    x = 733,128,668.80/30,721.44
  6. Step 6: Final answer
    x = 23,863.75

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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.