Home / 12,387.07-18,580.95-3,621.99

Finding the Fourth Proportional to 12,387.07, 18,580.95 and 3,621.99

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Solution

The fourth proportional to 12,387.07, 18,580.95 and 3,621.99 is: 5,433.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.07 : 18,580.95 = 3,621.99 : x
  2. Step 2: Convert to fraction form
    12,387.07/18,580.95 = 3,621.99/x
  3. Step 3: Cross multiply
    12,387.07x = 18,580.95 × 3,621.99
  4. Step 4: Simplify right side
    12,387.07x = 67,300,015.09
  5. Step 5: Solve for x
    x = 67,300,015.09/12,387.07
  6. Step 6: Final answer
    x = 5,433.09

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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.