Home / 20,711,368.62-28,579,193.87-11,890,333.76

Finding the Fourth Proportional to 20,711,368.62, 28,579,193.87 and 11,890,333.76

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Solution

The fourth proportional to 20,711,368.62, 28,579,193.87 and 11,890,333.76 is: 16,407,228.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711,368.62 : 28,579,193.87 = 11,890,333.76 : x
  2. Step 2: Convert to fraction form
    20,711,368.62/28,579,193.87 = 11,890,333.76/x
  3. Step 3: Cross multiply
    20,711,368.62x = 28,579,193.87 × 11,890,333.76
  4. Step 4: Simplify right side
    20,711,368.62x = 339,816,153,503,698.44
  5. Step 5: Solve for x
    x = 339,816,153,503,698.44/20,711,368.62
  6. Step 6: Final answer
    x = 16,407,228.31

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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.