Home / 13,213.44-19,817.28-3,977.28

Finding the Fourth Proportional to 13,213.44, 19,817.28 and 3,977.28

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Solution

The fourth proportional to 13,213.44, 19,817.28 and 3,977.28 is: 5,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.44 : 19,817.28 = 3,977.28 : x
  2. Step 2: Convert to fraction form
    13,213.44/19,817.28 = 3,977.28/x
  3. Step 3: Cross multiply
    13,213.44x = 19,817.28 × 3,977.28
  4. Step 4: Simplify right side
    13,213.44x = 78,818,871.40
  5. Step 5: Solve for x
    x = 78,818,871.40/13,213.44
  6. Step 6: Final answer
    x = 5,965.05

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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.