Home / 12,079.40-18,115.58-4,682.20

Finding the Fourth Proportional to 12,079.40, 18,115.58 and 4,682.20

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Solution

The fourth proportional to 12,079.40, 18,115.58 and 4,682.20 is: 7,021.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.40 : 18,115.58 = 4,682.20 : x
  2. Step 2: Convert to fraction form
    12,079.40/18,115.58 = 4,682.20/x
  3. Step 3: Cross multiply
    12,079.40x = 18,115.58 × 4,682.20
  4. Step 4: Simplify right side
    12,079.40x = 84,820,768.68
  5. Step 5: Solve for x
    x = 84,820,768.68/12,079.40
  6. Step 6: Final answer
    x = 7,021.94

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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.