Home / 12,145.01-18,212.30-4,245.15

Finding the Fourth Proportional to 12,145.01, 18,212.30 and 4,245.15

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Solution

The fourth proportional to 12,145.01, 18,212.30 and 4,245.15 is: 6,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.01 : 18,212.30 = 4,245.15 : x
  2. Step 2: Convert to fraction form
    12,145.01/18,212.30 = 4,245.15/x
  3. Step 3: Cross multiply
    12,145.01x = 18,212.30 × 4,245.15
  4. Step 4: Simplify right side
    12,145.01x = 77,313,924.12
  5. Step 5: Solve for x
    x = 77,313,924.12/12,145.01
  6. Step 6: Final answer
    x = 6,365.90

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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.