Home / 21,128.73-31,698.36-6,337.94

Finding the Fourth Proportional to 21,128.73, 31,698.36 and 6,337.94

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Solution

The fourth proportional to 21,128.73, 31,698.36 and 6,337.94 is: 9,508.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,128.73 : 31,698.36 = 6,337.94 : x
  2. Step 2: Convert to fraction form
    21,128.73/31,698.36 = 6,337.94/x
  3. Step 3: Cross multiply
    21,128.73x = 31,698.36 × 6,337.94
  4. Step 4: Simplify right side
    21,128.73x = 200,902,145.29
  5. Step 5: Solve for x
    x = 200,902,145.29/21,128.73
  6. Step 6: Final answer
    x = 9,508.48

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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.