Home / 20,996,892.72-28,975,712.40-11,339,100.72

Finding the Fourth Proportional to 20,996,892.72, 28,975,712.40 and 11,339,100.72

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Solution

The fourth proportional to 20,996,892.72, 28,975,712.40 and 11,339,100.72 is: 15,647,959.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996,892.72 : 28,975,712.40 = 11,339,100.72 : x
  2. Step 2: Convert to fraction form
    20,996,892.72/28,975,712.40 = 11,339,100.72/x
  3. Step 3: Cross multiply
    20,996,892.72x = 28,975,712.40 × 11,339,100.72
  4. Step 4: Simplify right side
    20,996,892.72x = 328,558,521,337,352.94
  5. Step 5: Solve for x
    x = 328,558,521,337,352.94/20,996,892.72
  6. Step 6: Final answer
    x = 15,647,959.23

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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.