Home / 13,936.73-20,871-12,587.36

Finding the Fourth Proportional to 13,936.73, 20,871 and 12,587.36

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Solution

The fourth proportional to 13,936.73, 20,871 and 12,587.36 is: 18,850.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,936.73 : 20,871 = 12,587.36 : x
  2. Step 2: Convert to fraction form
    13,936.73/20,871 = 12,587.36/x
  3. Step 3: Cross multiply
    13,936.73x = 20,871 × 12,587.36
  4. Step 4: Simplify right side
    13,936.73x = 262,710,686.21
  5. Step 5: Solve for x
    x = 262,710,686.21/13,936.73
  6. Step 6: Final answer
    x = 18,850.25

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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.