Home / 12,285.45-18,429.84-3,962.70

Finding the Fourth Proportional to 12,285.45, 18,429.84 and 3,962.70

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Solution

The fourth proportional to 12,285.45, 18,429.84 and 3,962.70 is: 5,944.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.45 : 18,429.84 = 3,962.70 : x
  2. Step 2: Convert to fraction form
    12,285.45/18,429.84 = 3,962.70/x
  3. Step 3: Cross multiply
    12,285.45x = 18,429.84 × 3,962.70
  4. Step 4: Simplify right side
    12,285.45x = 73,031,926.97
  5. Step 5: Solve for x
    x = 73,031,926.97/12,285.45
  6. Step 6: Final answer
    x = 5,944.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.