Home / 18,214.28-25,139.80-11,923

Finding the Fourth Proportional to 18,214.28, 25,139.80 and 11,923

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Solution

The fourth proportional to 18,214.28, 25,139.80 and 11,923 is: 16,456.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,214.28 : 25,139.80 = 11,923 : x
  2. Step 2: Convert to fraction form
    18,214.28/25,139.80 = 11,923/x
  3. Step 3: Cross multiply
    18,214.28x = 25,139.80 × 11,923
  4. Step 4: Simplify right side
    18,214.28x = 299,741,835.40
  5. Step 5: Solve for x
    x = 299,741,835.40/18,214.28
  6. Step 6: Final answer
    x = 16,456.42

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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.