Home / 12,505.03-18,760.12-4,185.14

Finding the Fourth Proportional to 12,505.03, 18,760.12 and 4,185.14

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Solution

The fourth proportional to 12,505.03, 18,760.12 and 4,185.14 is: 6,278.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.03 : 18,760.12 = 4,185.14 : x
  2. Step 2: Convert to fraction form
    12,505.03/18,760.12 = 4,185.14/x
  3. Step 3: Cross multiply
    12,505.03x = 18,760.12 × 4,185.14
  4. Step 4: Simplify right side
    12,505.03x = 78,513,624.35
  5. Step 5: Solve for x
    x = 78,513,624.35/12,505.03
  6. Step 6: Final answer
    x = 6,278.56

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1.5x scale

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.