Home / 21,108.38-31,664.39-5,526

Finding the Fourth Proportional to 21,108.38, 31,664.39 and 5,526

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Solution

The fourth proportional to 21,108.38, 31,664.39 and 5,526 is: 8,289.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.38 : 31,664.39 = 5,526 : x
  2. Step 2: Convert to fraction form
    21,108.38/31,664.39 = 5,526/x
  3. Step 3: Cross multiply
    21,108.38x = 31,664.39 × 5,526
  4. Step 4: Simplify right side
    21,108.38x = 174,977,391.51
  5. Step 5: Solve for x
    x = 174,977,391.51/21,108.38
  6. Step 6: Final answer
    x = 8,289.48

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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.