Home / 30,119.20-41,543.76-21,185.44

Finding the Fourth Proportional to 30,119.20, 41,543.76 and 21,185.44

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Solution

The fourth proportional to 30,119.20, 41,543.76 and 21,185.44 is: 29,221.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.20 : 41,543.76 = 21,185.44 : x
  2. Step 2: Convert to fraction form
    30,119.20/41,543.76 = 21,185.44/x
  3. Step 3: Cross multiply
    30,119.20x = 41,543.76 × 21,185.44
  4. Step 4: Simplify right side
    30,119.20x = 880,122,834.85
  5. Step 5: Solve for x
    x = 880,122,834.85/30,119.20
  6. Step 6: Final answer
    x = 29,221.32

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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.