Home / 12,103.41-18,155.13-3,783.47

Finding the Fourth Proportional to 12,103.41, 18,155.13 and 3,783.47

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Solution

The fourth proportional to 12,103.41, 18,155.13 and 3,783.47 is: 5,675.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103.41 : 18,155.13 = 3,783.47 : x
  2. Step 2: Convert to fraction form
    12,103.41/18,155.13 = 3,783.47/x
  3. Step 3: Cross multiply
    12,103.41x = 18,155.13 × 3,783.47
  4. Step 4: Simplify right side
    12,103.41x = 68,689,389.70
  5. Step 5: Solve for x
    x = 68,689,389.70/12,103.41
  6. Step 6: Final answer
    x = 5,675.21

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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.