Home / 13,991.81-20,972.93-4,629.43

Finding the Fourth Proportional to 13,991.81, 20,972.93 and 4,629.43

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Solution

The fourth proportional to 13,991.81, 20,972.93 and 4,629.43 is: 6,939.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.81 : 20,972.93 = 4,629.43 : x
  2. Step 2: Convert to fraction form
    13,991.81/20,972.93 = 4,629.43/x
  3. Step 3: Cross multiply
    13,991.81x = 20,972.93 × 4,629.43
  4. Step 4: Simplify right side
    13,991.81x = 97,092,606.47
  5. Step 5: Solve for x
    x = 97,092,606.47/13,991.81
  6. Step 6: Final answer
    x = 6,939.25

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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.