Home / 30,170.70-45,261.09-12,641.85

Finding the Fourth Proportional to 30,170.70, 45,261.09 and 12,641.85

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Solution

The fourth proportional to 30,170.70, 45,261.09 and 12,641.85 is: 18,964.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,170.70 : 45,261.09 = 12,641.85 : x
  2. Step 2: Convert to fraction form
    30,170.70/45,261.09 = 12,641.85/x
  3. Step 3: Cross multiply
    30,170.70x = 45,261.09 × 12,641.85
  4. Step 4: Simplify right side
    30,170.70x = 572,183,910.62
  5. Step 5: Solve for x
    x = 572,183,910.62/30,170.70
  6. Step 6: Final answer
    x = 18,964.89

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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.