Home / 19,889.80-27,449.34-13,163.68

Finding the Fourth Proportional to 19,889.80, 27,449.34 and 13,163.68

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Solution

The fourth proportional to 19,889.80, 27,449.34 and 13,163.68 is: 18,166.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,889.80 : 27,449.34 = 13,163.68 : x
  2. Step 2: Convert to fraction form
    19,889.80/27,449.34 = 13,163.68/x
  3. Step 3: Cross multiply
    19,889.80x = 27,449.34 × 13,163.68
  4. Step 4: Simplify right side
    19,889.80x = 361,334,327.97
  5. Step 5: Solve for x
    x = 361,334,327.97/19,889.80
  6. Step 6: Final answer
    x = 18,166.82

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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.