Home / 15,819.06-21,833.64-13,163.88

Finding the Fourth Proportional to 15,819.06, 21,833.64 and 13,163.88

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Solution

The fourth proportional to 15,819.06, 21,833.64 and 13,163.88 is: 18,168.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.06 : 21,833.64 = 13,163.88 : x
  2. Step 2: Convert to fraction form
    15,819.06/21,833.64 = 13,163.88/x
  3. Step 3: Cross multiply
    15,819.06x = 21,833.64 × 13,163.88
  4. Step 4: Simplify right side
    15,819.06x = 287,415,416.92
  5. Step 5: Solve for x
    x = 287,415,416.92/15,819.06
  6. Step 6: Final answer
    x = 18,168.93

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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.