Home / 13,977.12-20,962.32-4,113.72

Finding the Fourth Proportional to 13,977.12, 20,962.32 and 4,113.72

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Solution

The fourth proportional to 13,977.12, 20,962.32 and 4,113.72 is: 6,169.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.12 : 20,962.32 = 4,113.72 : x
  2. Step 2: Convert to fraction form
    13,977.12/20,962.32 = 4,113.72/x
  3. Step 3: Cross multiply
    13,977.12x = 20,962.32 × 4,113.72
  4. Step 4: Simplify right side
    13,977.12x = 86,233,115.03
  5. Step 5: Solve for x
    x = 86,233,115.03/13,977.12
  6. Step 6: Final answer
    x = 6,169.59

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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.