Home / 12,619.47-18,932.00-3,855.07

Finding the Fourth Proportional to 12,619.47, 18,932.00 and 3,855.07

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Solution

The fourth proportional to 12,619.47, 18,932.00 and 3,855.07 is: 5,783.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.47 : 18,932.00 = 3,855.07 : x
  2. Step 2: Convert to fraction form
    12,619.47/18,932.00 = 3,855.07/x
  3. Step 3: Cross multiply
    12,619.47x = 18,932.00 × 3,855.07
  4. Step 4: Simplify right side
    12,619.47x = 72,984,189.63
  5. Step 5: Solve for x
    x = 72,984,189.63/12,619.47
  6. Step 6: Final answer
    x = 5,783.46

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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.