Home / 30,091.89-45,120.95-20,614.92

Finding the Fourth Proportional to 30,091.89, 45,120.95 and 20,614.92

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Solution

The fourth proportional to 30,091.89, 45,120.95 and 20,614.92 is: 30,910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,091.89 : 45,120.95 = 20,614.92 : x
  2. Step 2: Convert to fraction form
    30,091.89/45,120.95 = 20,614.92/x
  3. Step 3: Cross multiply
    30,091.89x = 45,120.95 × 20,614.92
  4. Step 4: Simplify right side
    30,091.89x = 930,164,548.97
  5. Step 5: Solve for x
    x = 930,164,548.97/30,091.89
  6. Step 6: Final answer
    x = 30,910.81

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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.