Home / 19,145.62-28,716.15-5,106.70

Finding the Fourth Proportional to 19,145.62, 28,716.15 and 5,106.70

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Solution

The fourth proportional to 19,145.62, 28,716.15 and 5,106.70 is: 7,659.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.62 : 28,716.15 = 5,106.70 : x
  2. Step 2: Convert to fraction form
    19,145.62/28,716.15 = 5,106.70/x
  3. Step 3: Cross multiply
    19,145.62x = 28,716.15 × 5,106.70
  4. Step 4: Simplify right side
    19,145.62x = 146,644,763.21
  5. Step 5: Solve for x
    x = 146,644,763.21/19,145.62
  6. Step 6: Final answer
    x = 7,659.44

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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.