Home / 20,081,331.80-30,121,997.70-18,695,648.60

Finding the Fourth Proportional to 20,081,331.80, 30,121,997.70 and 18,695,648.60

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Solution

The fourth proportional to 20,081,331.80, 30,121,997.70 and 18,695,648.60 is: 28,043,472.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081,331.80 : 30,121,997.70 = 18,695,648.60 : x
  2. Step 2: Convert to fraction form
    20,081,331.80/30,121,997.70 = 18,695,648.60/x
  3. Step 3: Cross multiply
    20,081,331.80x = 30,121,997.70 × 18,695,648.60
  4. Step 4: Simplify right side
    20,081,331.80x = 563,150,284,129,208.25
  5. Step 5: Solve for x
    x = 563,150,284,129,208.25/20,081,331.80
  6. Step 6: Final answer
    x = 28,043,472.90

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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.