Home / 12,622.40-18,932.91-3,856.63

Finding the Fourth Proportional to 12,622.40, 18,932.91 and 3,856.63

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Solution

The fourth proportional to 12,622.40, 18,932.91 and 3,856.63 is: 5,784.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.40 : 18,932.91 = 3,856.63 : x
  2. Step 2: Convert to fraction form
    12,622.40/18,932.91 = 3,856.63/x
  3. Step 3: Cross multiply
    12,622.40x = 18,932.91 × 3,856.63
  4. Step 4: Simplify right side
    12,622.40x = 73,017,228.69
  5. Step 5: Solve for x
    x = 73,017,228.69/12,622.40
  6. Step 6: Final answer
    x = 5,784.73

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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.