Home / 13,638.53-20,464.79-8,024.36

Finding the Fourth Proportional to 13,638.53, 20,464.79 and 8,024.36

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Solution

The fourth proportional to 13,638.53, 20,464.79 and 8,024.36 is: 12,040.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.53 : 20,464.79 = 8,024.36 : x
  2. Step 2: Convert to fraction form
    13,638.53/20,464.79 = 8,024.36/x
  3. Step 3: Cross multiply
    13,638.53x = 20,464.79 × 8,024.36
  4. Step 4: Simplify right side
    13,638.53x = 164,216,699.84
  5. Step 5: Solve for x
    x = 164,216,699.84/13,638.53
  6. Step 6: Final answer
    x = 12,040.64

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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.