Home / 30,221.94-45,363.90-20,196.38

Finding the Fourth Proportional to 30,221.94, 45,363.90 and 20,196.38

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Solution

The fourth proportional to 30,221.94, 45,363.90 and 20,196.38 is: 30,315.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221.94 : 45,363.90 = 20,196.38 : x
  2. Step 2: Convert to fraction form
    30,221.94/45,363.90 = 20,196.38/x
  3. Step 3: Cross multiply
    30,221.94x = 45,363.90 × 20,196.38
  4. Step 4: Simplify right side
    30,221.94x = 916,186,562.68
  5. Step 5: Solve for x
    x = 916,186,562.68/30,221.94
  6. Step 6: Final answer
    x = 30,315.28

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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.