Home / 21,012.74-28,996.85-11,452.43

Finding the Fourth Proportional to 21,012.74, 28,996.85 and 11,452.43

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Solution

The fourth proportional to 21,012.74, 28,996.85 and 11,452.43 is: 15,803.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.74 : 28,996.85 = 11,452.43 : x
  2. Step 2: Convert to fraction form
    21,012.74/28,996.85 = 11,452.43/x
  3. Step 3: Cross multiply
    21,012.74x = 28,996.85 × 11,452.43
  4. Step 4: Simplify right side
    21,012.74x = 332,084,410.08
  5. Step 5: Solve for x
    x = 332,084,410.08/21,012.74
  6. Step 6: Final answer
    x = 15,803.95

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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.