Home / 13,635.68-20,450.48-5,315.92

Finding the Fourth Proportional to 13,635.68, 20,450.48 and 5,315.92

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Solution

The fourth proportional to 13,635.68, 20,450.48 and 5,315.92 is: 7,972.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.68 : 20,450.48 = 5,315.92 : x
  2. Step 2: Convert to fraction form
    13,635.68/20,450.48 = 5,315.92/x
  3. Step 3: Cross multiply
    13,635.68x = 20,450.48 × 5,315.92
  4. Step 4: Simplify right side
    13,635.68x = 108,713,115.64
  5. Step 5: Solve for x
    x = 108,713,115.64/13,635.68
  6. Step 6: Final answer
    x = 7,972.69

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1.5x scale

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.