Home / 21,012.26-28,996.92-11,452.15

Finding the Fourth Proportional to 21,012.26, 28,996.92 and 11,452.15

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Solution

The fourth proportional to 21,012.26, 28,996.92 and 11,452.15 is: 15,803.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.26 : 28,996.92 = 11,452.15 : x
  2. Step 2: Convert to fraction form
    21,012.26/28,996.92 = 11,452.15/x
  3. Step 3: Cross multiply
    21,012.26x = 28,996.92 × 11,452.15
  4. Step 4: Simplify right side
    21,012.26x = 332,076,932.39
  5. Step 5: Solve for x
    x = 332,076,932.39/21,012.26
  6. Step 6: Final answer
    x = 15,803.96

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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.