Home / 12,907.56-19,361.34-4,143.18

Finding the Fourth Proportional to 12,907.56, 19,361.34 and 4,143.18

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Solution

The fourth proportional to 12,907.56, 19,361.34 and 4,143.18 is: 6,214.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.56 : 19,361.34 = 4,143.18 : x
  2. Step 2: Convert to fraction form
    12,907.56/19,361.34 = 4,143.18/x
  3. Step 3: Cross multiply
    12,907.56x = 19,361.34 × 4,143.18
  4. Step 4: Simplify right side
    12,907.56x = 80,217,516.66
  5. Step 5: Solve for x
    x = 80,217,516.66/12,907.56
  6. Step 6: Final answer
    x = 6,214.77

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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.