Home / 20,823,709.96-28,736,418.90-11,530,387.72

Finding the Fourth Proportional to 20,823,709.96, 28,736,418.90 and 11,530,387.72

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Solution

The fourth proportional to 20,823,709.96, 28,736,418.90 and 11,530,387.72 is: 15,911,768.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823,709.96 : 28,736,418.90 = 11,530,387.72 : x
  2. Step 2: Convert to fraction form
    20,823,709.96/28,736,418.90 = 11,530,387.72/x
  3. Step 3: Cross multiply
    20,823,709.96x = 28,736,418.90 × 11,530,387.72
  4. Step 4: Simplify right side
    20,823,709.96x = 331,342,051,601,335.94
  5. Step 5: Solve for x
    x = 331,342,051,601,335.94/20,823,709.96
  6. Step 6: Final answer
    x = 15,911,768.47

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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.