Home / 12,069.78-16,656.29-6,692.20

Finding the Fourth Proportional to 12,069.78, 16,656.29 and 6,692.20

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Solution

The fourth proportional to 12,069.78, 16,656.29 and 6,692.20 is: 9,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,069.78 : 16,656.29 = 6,692.20 : x
  2. Step 2: Convert to fraction form
    12,069.78/16,656.29 = 6,692.20/x
  3. Step 3: Cross multiply
    12,069.78x = 16,656.29 × 6,692.20
  4. Step 4: Simplify right side
    12,069.78x = 111,467,173.93
  5. Step 5: Solve for x
    x = 111,467,173.93/12,069.78
  6. Step 6: Final answer
    x = 9,235.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.