Home / 12,079.11-18,115.38-3,311.94

Finding the Fourth Proportional to 12,079.11, 18,115.38 and 3,311.94

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Solution

The fourth proportional to 12,079.11, 18,115.38 and 3,311.94 is: 4,967.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.11 : 18,115.38 = 3,311.94 : x
  2. Step 2: Convert to fraction form
    12,079.11/18,115.38 = 3,311.94/x
  3. Step 3: Cross multiply
    12,079.11x = 18,115.38 × 3,311.94
  4. Step 4: Simplify right side
    12,079.11x = 59,997,051.64
  5. Step 5: Solve for x
    x = 59,997,051.64/12,079.11
  6. Step 6: Final answer
    x = 4,967.01

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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.