Home / 21,076.65-31,619.34-8,596.71

Finding the Fourth Proportional to 21,076.65, 31,619.34 and 8,596.71

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Solution

The fourth proportional to 21,076.65, 31,619.34 and 8,596.71 is: 12,896.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.65 : 31,619.34 = 8,596.71 : x
  2. Step 2: Convert to fraction form
    21,076.65/31,619.34 = 8,596.71/x
  3. Step 3: Cross multiply
    21,076.65x = 31,619.34 × 8,596.71
  4. Step 4: Simplify right side
    21,076.65x = 271,822,296.37
  5. Step 5: Solve for x
    x = 271,822,296.37/21,076.65
  6. Step 6: Final answer
    x = 12,896.85

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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.