Home / 21,401.28-32,067.36-13,176

Finding the Fourth Proportional to 21,401.28, 32,067.36 and 13,176

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Solution

The fourth proportional to 21,401.28, 32,067.36 and 13,176 is: 19,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.28 : 32,067.36 = 13,176 : x
  2. Step 2: Convert to fraction form
    21,401.28/32,067.36 = 13,176/x
  3. Step 3: Cross multiply
    21,401.28x = 32,067.36 × 13,176
  4. Step 4: Simplify right side
    21,401.28x = 422,519,535.36
  5. Step 5: Solve for x
    x = 422,519,535.36/21,401.28
  6. Step 6: Final answer
    x = 19,742.72

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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.