Home / 13,744.08-18,962.64-8,078.40

Finding the Fourth Proportional to 13,744.08, 18,962.64 and 8,078.40

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Solution

The fourth proportional to 13,744.08, 18,962.64 and 8,078.40 is: 11,145.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,744.08 : 18,962.64 = 8,078.40 : x
  2. Step 2: Convert to fraction form
    13,744.08/18,962.64 = 8,078.40/x
  3. Step 3: Cross multiply
    13,744.08x = 18,962.64 × 8,078.40
  4. Step 4: Simplify right side
    13,744.08x = 153,187,790.98
  5. Step 5: Solve for x
    x = 153,187,790.98/13,744.08
  6. Step 6: Final answer
    x = 11,145.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.