Home / 13,531.88-20,299.04-3,671.21

Finding the Fourth Proportional to 13,531.88, 20,299.04 and 3,671.21

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Solution

The fourth proportional to 13,531.88, 20,299.04 and 3,671.21 is: 5,507.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.88 : 20,299.04 = 3,671.21 : x
  2. Step 2: Convert to fraction form
    13,531.88/20,299.04 = 3,671.21/x
  3. Step 3: Cross multiply
    13,531.88x = 20,299.04 × 3,671.21
  4. Step 4: Simplify right side
    13,531.88x = 74,522,038.64
  5. Step 5: Solve for x
    x = 74,522,038.64/13,531.88
  6. Step 6: Final answer
    x = 5,507.15

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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.