Home / 21,137.54-31,695.32-9,286.46

Finding the Fourth Proportional to 21,137.54, 31,695.32 and 9,286.46

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Solution

The fourth proportional to 21,137.54, 31,695.32 and 9,286.46 is: 13,924.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.54 : 31,695.32 = 9,286.46 : x
  2. Step 2: Convert to fraction form
    21,137.54/31,695.32 = 9,286.46/x
  3. Step 3: Cross multiply
    21,137.54x = 31,695.32 × 9,286.46
  4. Step 4: Simplify right side
    21,137.54x = 294,337,186.11
  5. Step 5: Solve for x
    x = 294,337,186.11/21,137.54
  6. Step 6: Final answer
    x = 13,924.86

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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.