Home / 10,408.20-15,620.38-7,267.80

Finding the Fourth Proportional to 10,408.20, 15,620.38 and 7,267.80

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Solution

The fourth proportional to 10,408.20, 15,620.38 and 7,267.80 is: 10,907.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,408.20 : 15,620.38 = 7,267.80 : x
  2. Step 2: Convert to fraction form
    10,408.20/15,620.38 = 7,267.80/x
  3. Step 3: Cross multiply
    10,408.20x = 15,620.38 × 7,267.80
  4. Step 4: Simplify right side
    10,408.20x = 113,525,797.76
  5. Step 5: Solve for x
    x = 113,525,797.76/10,408.20
  6. Step 6: Final answer
    x = 10,907.34

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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.