Home / 20,333,660.72-28,059,441.45-11,511,740.12

Finding the Fourth Proportional to 20,333,660.72, 28,059,441.45 and 11,511,740.12

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Solution

The fourth proportional to 20,333,660.72, 28,059,441.45 and 11,511,740.12 is: 15,885,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333,660.72 : 28,059,441.45 = 11,511,740.12 : x
  2. Step 2: Convert to fraction form
    20,333,660.72/28,059,441.45 = 11,511,740.12/x
  3. Step 3: Cross multiply
    20,333,660.72x = 28,059,441.45 × 11,511,740.12
  4. Step 4: Simplify right side
    20,333,660.72x = 323,012,997,884,755.94
  5. Step 5: Solve for x
    x = 323,012,997,884,755.94/20,333,660.72
  6. Step 6: Final answer
    x = 15,885,629.37

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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.