Home / 13,821.51-20,732.18-3,960.81

Finding the Fourth Proportional to 13,821.51, 20,732.18 and 3,960.81

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Solution

The fourth proportional to 13,821.51, 20,732.18 and 3,960.81 is: 5,941.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.51 : 20,732.18 = 3,960.81 : x
  2. Step 2: Convert to fraction form
    13,821.51/20,732.18 = 3,960.81/x
  3. Step 3: Cross multiply
    13,821.51x = 20,732.18 × 3,960.81
  4. Step 4: Simplify right side
    13,821.51x = 82,116,206.06
  5. Step 5: Solve for x
    x = 82,116,206.06/13,821.51
  6. Step 6: Final answer
    x = 5,941.19

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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.