Home / 20,360.04-28,083.15-11,976.54

Finding the Fourth Proportional to 20,360.04, 28,083.15 and 11,976.54

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Solution

The fourth proportional to 20,360.04, 28,083.15 and 11,976.54 is: 16,519.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.04 : 28,083.15 = 11,976.54 : x
  2. Step 2: Convert to fraction form
    20,360.04/28,083.15 = 11,976.54/x
  3. Step 3: Cross multiply
    20,360.04x = 28,083.15 × 11,976.54
  4. Step 4: Simplify right side
    20,360.04x = 336,338,969.30
  5. Step 5: Solve for x
    x = 336,338,969.30/20,360.04
  6. Step 6: Final answer
    x = 16,519.56

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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.