Home / 12,137.47-18,206.21-3,818.22

Finding the Fourth Proportional to 12,137.47, 18,206.21 and 3,818.22

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Solution

The fourth proportional to 12,137.47, 18,206.21 and 3,818.22 is: 5,727.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.47 : 18,206.21 = 3,818.22 : x
  2. Step 2: Convert to fraction form
    12,137.47/18,206.21 = 3,818.22/x
  3. Step 3: Cross multiply
    12,137.47x = 18,206.21 × 3,818.22
  4. Step 4: Simplify right side
    12,137.47x = 69,515,315.15
  5. Step 5: Solve for x
    x = 69,515,315.15/12,137.47
  6. Step 6: Final answer
    x = 5,727.33

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Double scale
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Similar ratio
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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.