Home / 13,524.48-20,270.16-7,686

Finding the Fourth Proportional to 13,524.48, 20,270.16 and 7,686

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Solution

The fourth proportional to 13,524.48, 20,270.16 and 7,686 is: 11,519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,524.48 : 20,270.16 = 7,686 : x
  2. Step 2: Convert to fraction form
    13,524.48/20,270.16 = 7,686/x
  3. Step 3: Cross multiply
    13,524.48x = 20,270.16 × 7,686
  4. Step 4: Simplify right side
    13,524.48x = 155,796,449.76
  5. Step 5: Solve for x
    x = 155,796,449.76/13,524.48
  6. Step 6: Final answer
    x = 11,519.59

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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.