Home / 21,106-31,669.94-10,717.75

Finding the Fourth Proportional to 21,106, 31,669.94 and 10,717.75

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Solution

The fourth proportional to 21,106, 31,669.94 and 10,717.75 is: 16,082.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106 : 31,669.94 = 10,717.75 : x
  2. Step 2: Convert to fraction form
    21,106/31,669.94 = 10,717.75/x
  3. Step 3: Cross multiply
    21,106x = 31,669.94 × 10,717.75
  4. Step 4: Simplify right side
    21,106x = 339,430,445.85
  5. Step 5: Solve for x
    x = 339,430,445.85/21,106
  6. Step 6: Final answer
    x = 16,082.18

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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.