Home / 20,126.83-30,178.45-7,647.77

Finding the Fourth Proportional to 20,126.83, 30,178.45 and 7,647.77

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Solution

The fourth proportional to 20,126.83, 30,178.45 and 7,647.77 is: 11,467.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.83 : 30,178.45 = 7,647.77 : x
  2. Step 2: Convert to fraction form
    20,126.83/30,178.45 = 7,647.77/x
  3. Step 3: Cross multiply
    20,126.83x = 30,178.45 × 7,647.77
  4. Step 4: Simplify right side
    20,126.83x = 230,797,844.56
  5. Step 5: Solve for x
    x = 230,797,844.56/20,126.83
  6. Step 6: Final answer
    x = 11,467.17

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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.