Home / 21,005.00-31,507.84-6,215.41

Finding the Fourth Proportional to 21,005.00, 31,507.84 and 6,215.41

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Solution

The fourth proportional to 21,005.00, 31,507.84 and 6,215.41 is: 9,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005.00 : 31,507.84 = 6,215.41 : x
  2. Step 2: Convert to fraction form
    21,005.00/31,507.84 = 6,215.41/x
  3. Step 3: Cross multiply
    21,005.00x = 31,507.84 × 6,215.41
  4. Step 4: Simplify right side
    21,005.00x = 195,834,067.39
  5. Step 5: Solve for x
    x = 195,834,067.39/21,005.00
  6. Step 6: Final answer
    x = 9,323.21

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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.