Home / 20,072.30-30,079.58-11,288.66

Finding the Fourth Proportional to 20,072.30, 30,079.58 and 11,288.66

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Solution

The fourth proportional to 20,072.30, 30,079.58 and 11,288.66 is: 16,916.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.30 : 30,079.58 = 11,288.66 : x
  2. Step 2: Convert to fraction form
    20,072.30/30,079.58 = 11,288.66/x
  3. Step 3: Cross multiply
    20,072.30x = 30,079.58 × 11,288.66
  4. Step 4: Simplify right side
    20,072.30x = 339,557,944.72
  5. Step 5: Solve for x
    x = 339,557,944.72/20,072.30
  6. Step 6: Final answer
    x = 16,916.75

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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.