Home / 13,881.31-20,821.34-4,020.37

Finding the Fourth Proportional to 13,881.31, 20,821.34 and 4,020.37

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Solution

The fourth proportional to 13,881.31, 20,821.34 and 4,020.37 is: 6,030.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.31 : 20,821.34 = 4,020.37 : x
  2. Step 2: Convert to fraction form
    13,881.31/20,821.34 = 4,020.37/x
  3. Step 3: Cross multiply
    13,881.31x = 20,821.34 × 4,020.37
  4. Step 4: Simplify right side
    13,881.31x = 83,709,448.69
  5. Step 5: Solve for x
    x = 83,709,448.69/13,881.31
  6. Step 6: Final answer
    x = 6,030.37

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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.