Home / 18,681.26-28,021.82-4,830.26

Finding the Fourth Proportional to 18,681.26, 28,021.82 and 4,830.26

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Solution

The fourth proportional to 18,681.26, 28,021.82 and 4,830.26 is: 7,245.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.26 : 28,021.82 = 4,830.26 : x
  2. Step 2: Convert to fraction form
    18,681.26/28,021.82 = 4,830.26/x
  3. Step 3: Cross multiply
    18,681.26x = 28,021.82 × 4,830.26
  4. Step 4: Simplify right side
    18,681.26x = 135,352,512.01
  5. Step 5: Solve for x
    x = 135,352,512.01/18,681.26
  6. Step 6: Final answer
    x = 7,245.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.