Home / 12,460.20-18,692.10-4,138.80

Finding the Fourth Proportional to 12,460.20, 18,692.10 and 4,138.80

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Solution

The fourth proportional to 12,460.20, 18,692.10 and 4,138.80 is: 6,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,460.20 : 18,692.10 = 4,138.80 : x
  2. Step 2: Convert to fraction form
    12,460.20/18,692.10 = 4,138.80/x
  3. Step 3: Cross multiply
    12,460.20x = 18,692.10 × 4,138.80
  4. Step 4: Simplify right side
    12,460.20x = 77,362,863.48
  5. Step 5: Solve for x
    x = 77,362,863.48/12,460.20
  6. Step 6: Final answer
    x = 6,208.80

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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.