Home / 12,745.23-19,117.85-8,361.68

Finding the Fourth Proportional to 12,745.23, 19,117.85 and 8,361.68

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Solution

The fourth proportional to 12,745.23, 19,117.85 and 8,361.68 is: 12,542.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.23 : 19,117.85 = 8,361.68 : x
  2. Step 2: Convert to fraction form
    12,745.23/19,117.85 = 8,361.68/x
  3. Step 3: Cross multiply
    12,745.23x = 19,117.85 × 8,361.68
  4. Step 4: Simplify right side
    12,745.23x = 159,857,206.59
  5. Step 5: Solve for x
    x = 159,857,206.59/12,745.23
  6. Step 6: Final answer
    x = 12,542.51

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Half scale
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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.