Home / 18,115.38-27,189.47-12,571.34

Finding the Fourth Proportional to 18,115.38, 27,189.47 and 12,571.34

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Solution

The fourth proportional to 18,115.38, 27,189.47 and 12,571.34 is: 18,868.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.38 : 27,189.47 = 12,571.34 : x
  2. Step 2: Convert to fraction form
    18,115.38/27,189.47 = 12,571.34/x
  3. Step 3: Cross multiply
    18,115.38x = 27,189.47 × 12,571.34
  4. Step 4: Simplify right side
    18,115.38x = 341,807,967.27
  5. Step 5: Solve for x
    x = 341,807,967.27/18,115.38
  6. Step 6: Final answer
    x = 18,868.39

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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.