Home / 13,656.52-18,846.84-7,991.38

Finding the Fourth Proportional to 13,656.52, 18,846.84 and 7,991.38

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Solution

The fourth proportional to 13,656.52, 18,846.84 and 7,991.38 is: 11,028.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.52 : 18,846.84 = 7,991.38 : x
  2. Step 2: Convert to fraction form
    13,656.52/18,846.84 = 7,991.38/x
  3. Step 3: Cross multiply
    13,656.52x = 18,846.84 × 7,991.38
  4. Step 4: Simplify right side
    13,656.52x = 150,612,260.24
  5. Step 5: Solve for x
    x = 150,612,260.24/13,656.52
  6. Step 6: Final answer
    x = 11,028.60

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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.