Home / 13,380.08-18,468.36-8,074

Finding the Fourth Proportional to 13,380.08, 18,468.36 and 8,074

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Solution

The fourth proportional to 13,380.08, 18,468.36 and 8,074 is: 11,144.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.08 : 18,468.36 = 8,074 : x
  2. Step 2: Convert to fraction form
    13,380.08/18,468.36 = 8,074/x
  3. Step 3: Cross multiply
    13,380.08x = 18,468.36 × 8,074
  4. Step 4: Simplify right side
    13,380.08x = 149,113,538.64
  5. Step 5: Solve for x
    x = 149,113,538.64/13,380.08
  6. Step 6: Final answer
    x = 11,144.44

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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.