Home / 20,333,661.72-28,059,442.83-11,511,741.12

Finding the Fourth Proportional to 20,333,661.72, 28,059,442.83 and 11,511,741.12

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Solution

The fourth proportional to 20,333,661.72, 28,059,442.83 and 11,511,741.12 is: 15,885,630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333,661.72 : 28,059,442.83 = 11,511,741.12 : x
  2. Step 2: Convert to fraction form
    20,333,661.72/28,059,442.83 = 11,511,741.12/x
  3. Step 3: Cross multiply
    20,333,661.72x = 28,059,442.83 × 11,511,741.12
  4. Step 4: Simplify right side
    20,333,661.72x = 323,013,041,830,400.12
  5. Step 5: Solve for x
    x = 323,013,041,830,400.12/20,333,661.72
  6. Step 6: Final answer
    x = 15,885,630.75

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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.