Home / 13,113.62-19,687.58-7,786.52

Finding the Fourth Proportional to 13,113.62, 19,687.58 and 7,786.52

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Solution

The fourth proportional to 13,113.62, 19,687.58 and 7,786.52 is: 11,689.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.62 : 19,687.58 = 7,786.52 : x
  2. Step 2: Convert to fraction form
    13,113.62/19,687.58 = 7,786.52/x
  3. Step 3: Cross multiply
    13,113.62x = 19,687.58 × 7,786.52
  4. Step 4: Simplify right side
    13,113.62x = 153,297,784.64
  5. Step 5: Solve for x
    x = 153,297,784.64/13,113.62
  6. Step 6: Final answer
    x = 11,689.96

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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.