Home / 13,608.33-20,403.99-7,756.89

Finding the Fourth Proportional to 13,608.33, 20,403.99 and 7,756.89

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Solution

The fourth proportional to 13,608.33, 20,403.99 and 7,756.89 is: 11,630.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.33 : 20,403.99 = 7,756.89 : x
  2. Step 2: Convert to fraction form
    13,608.33/20,403.99 = 7,756.89/x
  3. Step 3: Cross multiply
    13,608.33x = 20,403.99 × 7,756.89
  4. Step 4: Simplify right side
    13,608.33x = 158,271,505.99
  5. Step 5: Solve for x
    x = 158,271,505.99/13,608.33
  6. Step 6: Final answer
    x = 11,630.49

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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.