Home / 21,971.81-32,930.30-10,717.87

Finding the Fourth Proportional to 21,971.81, 32,930.30 and 10,717.87

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Solution

The fourth proportional to 21,971.81, 32,930.30 and 10,717.87 is: 16,063.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,971.81 : 32,930.30 = 10,717.87 : x
  2. Step 2: Convert to fraction form
    21,971.81/32,930.30 = 10,717.87/x
  3. Step 3: Cross multiply
    21,971.81x = 32,930.30 × 10,717.87
  4. Step 4: Simplify right side
    21,971.81x = 352,942,620.39
  5. Step 5: Solve for x
    x = 352,942,620.39/21,971.81
  6. Step 6: Final answer
    x = 16,063.43

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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.