Home / 20,982.16-28,959.26-12,029.73

Finding the Fourth Proportional to 20,982.16, 28,959.26 and 12,029.73

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Solution

The fourth proportional to 20,982.16, 28,959.26 and 12,029.73 is: 16,603.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.16 : 28,959.26 = 12,029.73 : x
  2. Step 2: Convert to fraction form
    20,982.16/28,959.26 = 12,029.73/x
  3. Step 3: Cross multiply
    20,982.16x = 28,959.26 × 12,029.73
  4. Step 4: Simplify right side
    20,982.16x = 348,372,078.80
  5. Step 5: Solve for x
    x = 348,372,078.80/20,982.16
  6. Step 6: Final answer
    x = 16,603.25

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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.