Home / 12,122.12-18,185.34-4,341.80

Finding the Fourth Proportional to 12,122.12, 18,185.34 and 4,341.80

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Solution

The fourth proportional to 12,122.12, 18,185.34 and 4,341.80 is: 6,513.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.12 : 18,185.34 = 4,341.80 : x
  2. Step 2: Convert to fraction form
    12,122.12/18,185.34 = 4,341.80/x
  3. Step 3: Cross multiply
    12,122.12x = 18,185.34 × 4,341.80
  4. Step 4: Simplify right side
    12,122.12x = 78,957,109.21
  5. Step 5: Solve for x
    x = 78,957,109.21/12,122.12
  6. Step 6: Final answer
    x = 6,513.47

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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.