Home / 21,137.41-31,693.79-14,125.34

Finding the Fourth Proportional to 21,137.41, 31,693.79 and 14,125.34

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Solution

The fourth proportional to 21,137.41, 31,693.79 and 14,125.34 is: 21,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.41 : 31,693.79 = 14,125.34 : x
  2. Step 2: Convert to fraction form
    21,137.41/31,693.79 = 14,125.34/x
  3. Step 3: Cross multiply
    21,137.41x = 31,693.79 × 14,125.34
  4. Step 4: Simplify right side
    21,137.41x = 447,685,594.73
  5. Step 5: Solve for x
    x = 447,685,594.73/21,137.41
  6. Step 6: Final answer
    x = 21,179.77

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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.