Home / 20,021.63-30,027.79-7,542.91

Finding the Fourth Proportional to 20,021.63, 30,027.79 and 7,542.91

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Solution

The fourth proportional to 20,021.63, 30,027.79 and 7,542.91 is: 11,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.63 : 30,027.79 = 7,542.91 : x
  2. Step 2: Convert to fraction form
    20,021.63/30,027.79 = 7,542.91/x
  3. Step 3: Cross multiply
    20,021.63x = 30,027.79 × 7,542.91
  4. Step 4: Simplify right side
    20,021.63x = 226,496,729.62
  5. Step 5: Solve for x
    x = 226,496,729.62/20,021.63
  6. Step 6: Final answer
    x = 11,312.60

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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.