Home / 13,848.72-20,739.94-7,987.56

Finding the Fourth Proportional to 13,848.72, 20,739.94 and 7,987.56

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Solution

The fourth proportional to 13,848.72, 20,739.94 and 7,987.56 is: 11,962.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,848.72 : 20,739.94 = 7,987.56 : x
  2. Step 2: Convert to fraction form
    13,848.72/20,739.94 = 7,987.56/x
  3. Step 3: Cross multiply
    13,848.72x = 20,739.94 × 7,987.56
  4. Step 4: Simplify right side
    13,848.72x = 165,661,515.15
  5. Step 5: Solve for x
    x = 165,661,515.15/13,848.72
  6. Step 6: Final answer
    x = 11,962.23

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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.