Home / 21,310.86-31,982.09-17,200.11

Finding the Fourth Proportional to 21,310.86, 31,982.09 and 17,200.11

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Solution

The fourth proportional to 21,310.86, 31,982.09 and 17,200.11 is: 25,812.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.86 : 31,982.09 = 17,200.11 : x
  2. Step 2: Convert to fraction form
    21,310.86/31,982.09 = 17,200.11/x
  3. Step 3: Cross multiply
    21,310.86x = 31,982.09 × 17,200.11
  4. Step 4: Simplify right side
    21,310.86x = 550,095,466.03
  5. Step 5: Solve for x
    x = 550,095,466.03/21,310.86
  6. Step 6: Final answer
    x = 25,812.92

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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.