Home / 20,342.88-30,523.50-12,945.42

Finding the Fourth Proportional to 20,342.88, 30,523.50 and 12,945.42

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Solution

The fourth proportional to 20,342.88, 30,523.50 and 12,945.42 is: 19,423.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342.88 : 30,523.50 = 12,945.42 : x
  2. Step 2: Convert to fraction form
    20,342.88/30,523.50 = 12,945.42/x
  3. Step 3: Cross multiply
    20,342.88x = 30,523.50 × 12,945.42
  4. Step 4: Simplify right side
    20,342.88x = 395,139,527.37
  5. Step 5: Solve for x
    x = 395,139,527.37/20,342.88
  6. Step 6: Final answer
    x = 19,423.97

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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.