Home / 13,947.62-20,918.34-4,087.66

Finding the Fourth Proportional to 13,947.62, 20,918.34 and 4,087.66

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Solution

The fourth proportional to 13,947.62, 20,918.34 and 4,087.66 is: 6,130.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.62 : 20,918.34 = 4,087.66 : x
  2. Step 2: Convert to fraction form
    13,947.62/20,918.34 = 4,087.66/x
  3. Step 3: Cross multiply
    13,947.62x = 20,918.34 × 4,087.66
  4. Step 4: Simplify right side
    13,947.62x = 85,507,061.68
  5. Step 5: Solve for x
    x = 85,507,061.68/13,947.62
  6. Step 6: Final answer
    x = 6,130.58

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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.