Home / 13,734.40-20,607.60-5,420.48

Finding the Fourth Proportional to 13,734.40, 20,607.60 and 5,420.48

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Solution

The fourth proportional to 13,734.40, 20,607.60 and 5,420.48 is: 8,133.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,734.40 : 20,607.60 = 5,420.48 : x
  2. Step 2: Convert to fraction form
    13,734.40/20,607.60 = 5,420.48/x
  3. Step 3: Cross multiply
    13,734.40x = 20,607.60 × 5,420.48
  4. Step 4: Simplify right side
    13,734.40x = 111,703,083.65
  5. Step 5: Solve for x
    x = 111,703,083.65/13,734.40
  6. Step 6: Final answer
    x = 8,133.09

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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.