Home / 18,819.45-25,970.86-10,321.64

Finding the Fourth Proportional to 18,819.45, 25,970.86 and 10,321.64

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Solution

The fourth proportional to 18,819.45, 25,970.86 and 10,321.64 is: 14,243.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.45 : 25,970.86 = 10,321.64 : x
  2. Step 2: Convert to fraction form
    18,819.45/25,970.86 = 10,321.64/x
  3. Step 3: Cross multiply
    18,819.45x = 25,970.86 × 10,321.64
  4. Step 4: Simplify right side
    18,819.45x = 268,061,847.85
  5. Step 5: Solve for x
    x = 268,061,847.85/18,819.45
  6. Step 6: Final answer
    x = 14,243.87

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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.