Home / 13,907.21-20,860.83-3,518.96

Finding the Fourth Proportional to 13,907.21, 20,860.83 and 3,518.96

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Solution

The fourth proportional to 13,907.21, 20,860.83 and 3,518.96 is: 5,278.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.21 : 20,860.83 = 3,518.96 : x
  2. Step 2: Convert to fraction form
    13,907.21/20,860.83 = 3,518.96/x
  3. Step 3: Cross multiply
    13,907.21x = 20,860.83 × 3,518.96
  4. Step 4: Simplify right side
    13,907.21x = 73,408,426.34
  5. Step 5: Solve for x
    x = 73,408,426.34/13,907.21
  6. Step 6: Final answer
    x = 5,278.44

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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.