Home / 30,279.05-45,388.04-19,042.42

Finding the Fourth Proportional to 30,279.05, 45,388.04 and 19,042.42

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Solution

The fourth proportional to 30,279.05, 45,388.04 and 19,042.42 is: 28,544.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279.05 : 45,388.04 = 19,042.42 : x
  2. Step 2: Convert to fraction form
    30,279.05/45,388.04 = 19,042.42/x
  3. Step 3: Cross multiply
    30,279.05x = 45,388.04 × 19,042.42
  4. Step 4: Simplify right side
    30,279.05x = 864,297,983.38
  5. Step 5: Solve for x
    x = 864,297,983.38/30,279.05
  6. Step 6: Final answer
    x = 28,544.42

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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.