Home / 12,687.84-19,021.68-5,754.24

Finding the Fourth Proportional to 12,687.84, 19,021.68 and 5,754.24

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Solution

The fourth proportional to 12,687.84, 19,021.68 and 5,754.24 is: 8,626.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.84 : 19,021.68 = 5,754.24 : x
  2. Step 2: Convert to fraction form
    12,687.84/19,021.68 = 5,754.24/x
  3. Step 3: Cross multiply
    12,687.84x = 19,021.68 × 5,754.24
  4. Step 4: Simplify right side
    12,687.84x = 109,455,311.92
  5. Step 5: Solve for x
    x = 109,455,311.92/12,687.84
  6. Step 6: Final answer
    x = 8,626.79

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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.