Home / 18,769.05-25,890.03-12,395.66

Finding the Fourth Proportional to 18,769.05, 25,890.03 and 12,395.66

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Solution

The fourth proportional to 18,769.05, 25,890.03 and 12,395.66 is: 17,098.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,769.05 : 25,890.03 = 12,395.66 : x
  2. Step 2: Convert to fraction form
    18,769.05/25,890.03 = 12,395.66/x
  3. Step 3: Cross multiply
    18,769.05x = 25,890.03 × 12,395.66
  4. Step 4: Simplify right side
    18,769.05x = 320,923,879.82
  5. Step 5: Solve for x
    x = 320,923,879.82/18,769.05
  6. Step 6: Final answer
    x = 17,098.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.