Home / 12,420.44-18,631.26-3,655.43

Finding the Fourth Proportional to 12,420.44, 18,631.26 and 3,655.43

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Solution

The fourth proportional to 12,420.44, 18,631.26 and 3,655.43 is: 5,483.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.44 : 18,631.26 = 3,655.43 : x
  2. Step 2: Convert to fraction form
    12,420.44/18,631.26 = 3,655.43/x
  3. Step 3: Cross multiply
    12,420.44x = 18,631.26 × 3,655.43
  4. Step 4: Simplify right side
    12,420.44x = 68,105,266.74
  5. Step 5: Solve for x
    x = 68,105,266.74/12,420.44
  6. Step 6: Final answer
    x = 5,483.32

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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.