Home / 30,633.88-45,930.78-12,872.92

Finding the Fourth Proportional to 30,633.88, 45,930.78 and 12,872.92

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Solution

The fourth proportional to 30,633.88, 45,930.78 and 12,872.92 is: 19,300.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,633.88 : 45,930.78 = 12,872.92 : x
  2. Step 2: Convert to fraction form
    30,633.88/45,930.78 = 12,872.92/x
  3. Step 3: Cross multiply
    30,633.88x = 45,930.78 × 12,872.92
  4. Step 4: Simplify right side
    30,633.88x = 591,263,256.48
  5. Step 5: Solve for x
    x = 591,263,256.48/30,633.88
  6. Step 6: Final answer
    x = 19,300.96

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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.