Home / 20,475.33-30,738.92-12,558.39

Finding the Fourth Proportional to 20,475.33, 30,738.92 and 12,558.39

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Solution

The fourth proportional to 20,475.33, 30,738.92 and 12,558.39 is: 18,853.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.33 : 30,738.92 = 12,558.39 : x
  2. Step 2: Convert to fraction form
    20,475.33/30,738.92 = 12,558.39/x
  3. Step 3: Cross multiply
    20,475.33x = 30,738.92 × 12,558.39
  4. Step 4: Simplify right side
    20,475.33x = 386,031,282.75
  5. Step 5: Solve for x
    x = 386,031,282.75/20,475.33
  6. Step 6: Final answer
    x = 18,853.48

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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.