Home / 13,420.89-20,132.55-4,536

Finding the Fourth Proportional to 13,420.89, 20,132.55 and 4,536

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Solution

The fourth proportional to 13,420.89, 20,132.55 and 4,536 is: 6,804.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.89 : 20,132.55 = 4,536 : x
  2. Step 2: Convert to fraction form
    13,420.89/20,132.55 = 4,536/x
  3. Step 3: Cross multiply
    13,420.89x = 20,132.55 × 4,536
  4. Step 4: Simplify right side
    13,420.89x = 91,321,246.80
  5. Step 5: Solve for x
    x = 91,321,246.80/13,420.89
  6. Step 6: Final answer
    x = 6,804.41

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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.