Home / 20,103.88-30,165.64-14,218.58

Finding the Fourth Proportional to 20,103.88, 30,165.64 and 14,218.58

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Solution

The fourth proportional to 20,103.88, 30,165.64 and 14,218.58 is: 21,334.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.88 : 30,165.64 = 14,218.58 : x
  2. Step 2: Convert to fraction form
    20,103.88/30,165.64 = 14,218.58/x
  3. Step 3: Cross multiply
    20,103.88x = 30,165.64 × 14,218.58
  4. Step 4: Simplify right side
    20,103.88x = 428,912,658.78
  5. Step 5: Solve for x
    x = 428,912,658.78/20,103.88
  6. Step 6: Final answer
    x = 21,334.82

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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.