Home / 21,012.59-28,996.99-11,452.57

Finding the Fourth Proportional to 21,012.59, 28,996.99 and 11,452.57

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Solution

The fourth proportional to 21,012.59, 28,996.99 and 11,452.57 is: 15,804.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.59 : 28,996.99 = 11,452.57 : x
  2. Step 2: Convert to fraction form
    21,012.59/28,996.99 = 11,452.57/x
  3. Step 3: Cross multiply
    21,012.59x = 28,996.99 × 11,452.57
  4. Step 4: Simplify right side
    21,012.59x = 332,089,912.78
  5. Step 5: Solve for x
    x = 332,089,912.78/21,012.59
  6. Step 6: Final answer
    x = 15,804.33

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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.