Home / 20,201.34-30,314.63-7,722.42

Finding the Fourth Proportional to 20,201.34, 30,314.63 and 7,722.42

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Solution

The fourth proportional to 20,201.34, 30,314.63 and 7,722.42 is: 11,588.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.34 : 30,314.63 = 7,722.42 : x
  2. Step 2: Convert to fraction form
    20,201.34/30,314.63 = 7,722.42/x
  3. Step 3: Cross multiply
    20,201.34x = 30,314.63 × 7,722.42
  4. Step 4: Simplify right side
    20,201.34x = 234,102,305.00
  5. Step 5: Solve for x
    x = 234,102,305.00/20,201.34
  6. Step 6: Final answer
    x = 11,588.45

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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.