Home / 20,407,385.73-28,162,221.04-11,114,992.23

Finding the Fourth Proportional to 20,407,385.73, 28,162,221.04 and 11,114,992.23

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Solution

The fourth proportional to 20,407,385.73, 28,162,221.04 and 11,114,992.23 is: 15,338,704.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,385.73 : 28,162,221.04 = 11,114,992.23 : x
  2. Step 2: Convert to fraction form
    20,407,385.73/28,162,221.04 = 11,114,992.23/x
  3. Step 3: Cross multiply
    20,407,385.73x = 28,162,221.04 × 11,114,992.23
  4. Step 4: Simplify right side
    20,407,385.73x = 313,022,867,947,416.81
  5. Step 5: Solve for x
    x = 313,022,867,947,416.81/20,407,385.73
  6. Step 6: Final answer
    x = 15,338,704.92

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Double scale
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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.