Home / 13,129.47-19,685.49-6,881.94

Finding the Fourth Proportional to 13,129.47, 19,685.49 and 6,881.94

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Solution

The fourth proportional to 13,129.47, 19,685.49 and 6,881.94 is: 10,318.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.47 : 19,685.49 = 6,881.94 : x
  2. Step 2: Convert to fraction form
    13,129.47/19,685.49 = 6,881.94/x
  3. Step 3: Cross multiply
    13,129.47x = 19,685.49 × 6,881.94
  4. Step 4: Simplify right side
    13,129.47x = 135,474,361.05
  5. Step 5: Solve for x
    x = 135,474,361.05/13,129.47
  6. Step 6: Final answer
    x = 10,318.34

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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.