Home / 12,459.44-18,692.52-4,140.80

Finding the Fourth Proportional to 12,459.44, 18,692.52 and 4,140.80

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Solution

The fourth proportional to 12,459.44, 18,692.52 and 4,140.80 is: 6,212.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.44 : 18,692.52 = 4,140.80 : x
  2. Step 2: Convert to fraction form
    12,459.44/18,692.52 = 4,140.80/x
  3. Step 3: Cross multiply
    12,459.44x = 18,692.52 × 4,140.80
  4. Step 4: Simplify right side
    12,459.44x = 77,401,986.82
  5. Step 5: Solve for x
    x = 77,401,986.82/12,459.44
  6. Step 6: Final answer
    x = 6,212.32

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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.