Home / 21,287.00-31,903.07-19,958.37

Finding the Fourth Proportional to 21,287.00, 31,903.07 and 19,958.37

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Solution

The fourth proportional to 21,287.00, 31,903.07 and 19,958.37 is: 29,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.00 : 31,903.07 = 19,958.37 : x
  2. Step 2: Convert to fraction form
    21,287.00/31,903.07 = 19,958.37/x
  3. Step 3: Cross multiply
    21,287.00x = 31,903.07 × 19,958.37
  4. Step 4: Simplify right side
    21,287.00x = 636,733,175.40
  5. Step 5: Solve for x
    x = 636,733,175.40/21,287.00
  6. Step 6: Final answer
    x = 29,911.84

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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.