Home / 12,638.47-18,957.75-3,873.37

Finding the Fourth Proportional to 12,638.47, 18,957.75 and 3,873.37

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Solution

The fourth proportional to 12,638.47, 18,957.75 and 3,873.37 is: 5,810.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.47 : 18,957.75 = 3,873.37 : x
  2. Step 2: Convert to fraction form
    12,638.47/18,957.75 = 3,873.37/x
  3. Step 3: Cross multiply
    12,638.47x = 18,957.75 × 3,873.37
  4. Step 4: Simplify right side
    12,638.47x = 73,430,380.12
  5. Step 5: Solve for x
    x = 73,430,380.12/12,638.47
  6. Step 6: Final answer
    x = 5,810.07

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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.