Home / 18,820.98-28,228.38-6,980.34

Finding the Fourth Proportional to 18,820.98, 28,228.38 and 6,980.34

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Solution

The fourth proportional to 18,820.98, 28,228.38 and 6,980.34 is: 10,469.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.98 : 28,228.38 = 6,980.34 : x
  2. Step 2: Convert to fraction form
    18,820.98/28,228.38 = 6,980.34/x
  3. Step 3: Cross multiply
    18,820.98x = 28,228.38 × 6,980.34
  4. Step 4: Simplify right side
    18,820.98x = 197,043,690.05
  5. Step 5: Solve for x
    x = 197,043,690.05/18,820.98
  6. Step 6: Final answer
    x = 10,469.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.