Home / 13,954.34-20,931.56-3,424.43

Finding the Fourth Proportional to 13,954.34, 20,931.56 and 3,424.43

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Solution

The fourth proportional to 13,954.34, 20,931.56 and 3,424.43 is: 5,136.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.34 : 20,931.56 = 3,424.43 : x
  2. Step 2: Convert to fraction form
    13,954.34/20,931.56 = 3,424.43/x
  3. Step 3: Cross multiply
    13,954.34x = 20,931.56 × 3,424.43
  4. Step 4: Simplify right side
    13,954.34x = 71,678,662.01
  5. Step 5: Solve for x
    x = 71,678,662.01/13,954.34
  6. Step 6: Final answer
    x = 5,136.66

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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.