Home / 30,330.57-41,833.91-20,103.11

Finding the Fourth Proportional to 30,330.57, 41,833.91 and 20,103.11

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Solution

The fourth proportional to 30,330.57, 41,833.91 and 20,103.11 is: 27,727.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,330.57 : 41,833.91 = 20,103.11 : x
  2. Step 2: Convert to fraction form
    30,330.57/41,833.91 = 20,103.11/x
  3. Step 3: Cross multiply
    30,330.57x = 41,833.91 × 20,103.11
  4. Step 4: Simplify right side
    30,330.57x = 840,991,692.43
  5. Step 5: Solve for x
    x = 840,991,692.43/30,330.57
  6. Step 6: Final answer
    x = 27,727.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.