Home / 21,310.92-31,969.96-6,516.37

Finding the Fourth Proportional to 21,310.92, 31,969.96 and 6,516.37

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Solution

The fourth proportional to 21,310.92, 31,969.96 and 6,516.37 is: 9,775.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.92 : 31,969.96 = 6,516.37 : x
  2. Step 2: Convert to fraction form
    21,310.92/31,969.96 = 6,516.37/x
  3. Step 3: Cross multiply
    21,310.92x = 31,969.96 × 6,516.37
  4. Step 4: Simplify right side
    21,310.92x = 208,328,088.25
  5. Step 5: Solve for x
    x = 208,328,088.25/21,310.92
  6. Step 6: Final answer
    x = 9,775.65

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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.