Home / 13,315.11-19,965.70-3,953.83

Finding the Fourth Proportional to 13,315.11, 19,965.70 and 3,953.83

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Solution

The fourth proportional to 13,315.11, 19,965.70 and 3,953.83 is: 5,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.11 : 19,965.70 = 3,953.83 : x
  2. Step 2: Convert to fraction form
    13,315.11/19,965.70 = 3,953.83/x
  3. Step 3: Cross multiply
    13,315.11x = 19,965.70 × 3,953.83
  4. Step 4: Simplify right side
    13,315.11x = 78,940,983.63
  5. Step 5: Solve for x
    x = 78,940,983.63/13,315.11
  6. Step 6: Final answer
    x = 5,928.68

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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.