Home / 29,172.41-43,721.70-18,638.36

Finding the Fourth Proportional to 29,172.41, 43,721.70 and 18,638.36

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Solution

The fourth proportional to 29,172.41, 43,721.70 and 18,638.36 is: 27,933.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,172.41 : 43,721.70 = 18,638.36 : x
  2. Step 2: Convert to fraction form
    29,172.41/43,721.70 = 18,638.36/x
  3. Step 3: Cross multiply
    29,172.41x = 43,721.70 × 18,638.36
  4. Step 4: Simplify right side
    29,172.41x = 814,900,784.41
  5. Step 5: Solve for x
    x = 814,900,784.41/29,172.41
  6. Step 6: Final answer
    x = 27,933.95

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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.