Home / 13,148.58-18,144.35-7,179.09

Finding the Fourth Proportional to 13,148.58, 18,144.35 and 7,179.09

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Solution

The fourth proportional to 13,148.58, 18,144.35 and 7,179.09 is: 9,906.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.58 : 18,144.35 = 7,179.09 : x
  2. Step 2: Convert to fraction form
    13,148.58/18,144.35 = 7,179.09/x
  3. Step 3: Cross multiply
    13,148.58x = 18,144.35 × 7,179.09
  4. Step 4: Simplify right side
    13,148.58x = 130,259,885.75
  5. Step 5: Solve for x
    x = 130,259,885.75/13,148.58
  6. Step 6: Final answer
    x = 9,906.76

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1.5x scale

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.