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Finding the Fourth Proportional to 18,822.35, 25,976.03 and 10,438.85

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Solution

The fourth proportional to 18,822.35, 25,976.03 and 10,438.85 is: 14,406.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.35 : 25,976.03 = 10,438.85 : x
  2. Step 2: Convert to fraction form
    18,822.35/25,976.03 = 10,438.85/x
  3. Step 3: Cross multiply
    18,822.35x = 25,976.03 × 10,438.85
  4. Step 4: Simplify right side
    18,822.35x = 271,159,698.69
  5. Step 5: Solve for x
    x = 271,159,698.69/18,822.35
  6. Step 6: Final answer
    x = 14,406.27

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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.