Home / 11,139.96-16,713.24-4,215

Finding the Fourth Proportional to 11,139.96, 16,713.24 and 4,215

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Solution

The fourth proportional to 11,139.96, 16,713.24 and 4,215 is: 6,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.96 : 16,713.24 = 4,215 : x
  2. Step 2: Convert to fraction form
    11,139.96/16,713.24 = 4,215/x
  3. Step 3: Cross multiply
    11,139.96x = 16,713.24 × 4,215
  4. Step 4: Simplify right side
    11,139.96x = 70,446,306.60
  5. Step 5: Solve for x
    x = 70,446,306.60/11,139.96
  6. Step 6: Final answer
    x = 6,323.75

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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.