Home / 13,739.88-18,963.74-8,076.47

Finding the Fourth Proportional to 13,739.88, 18,963.74 and 8,076.47

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Solution

The fourth proportional to 13,739.88, 18,963.74 and 8,076.47 is: 11,147.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.88 : 18,963.74 = 8,076.47 : x
  2. Step 2: Convert to fraction form
    13,739.88/18,963.74 = 8,076.47/x
  3. Step 3: Cross multiply
    13,739.88x = 18,963.74 × 8,076.47
  4. Step 4: Simplify right side
    13,739.88x = 153,159,942.00
  5. Step 5: Solve for x
    x = 153,159,942.00/13,739.88
  6. Step 6: Final answer
    x = 11,147.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.