Home / 20,696.40-31,044.76-5,905.28

Finding the Fourth Proportional to 20,696.40, 31,044.76 and 5,905.28

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Solution

The fourth proportional to 20,696.40, 31,044.76 and 5,905.28 is: 8,857.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.40 : 31,044.76 = 5,905.28 : x
  2. Step 2: Convert to fraction form
    20,696.40/31,044.76 = 5,905.28/x
  3. Step 3: Cross multiply
    20,696.40x = 31,044.76 × 5,905.28
  4. Step 4: Simplify right side
    20,696.40x = 183,328,000.33
  5. Step 5: Solve for x
    x = 183,328,000.33/20,696.40
  6. Step 6: Final answer
    x = 8,857.97

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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.