Home / 20,672,709.48-28,527,853.86-11,505,155.40

Finding the Fourth Proportional to 20,672,709.48, 28,527,853.86 and 11,505,155.40

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Solution

The fourth proportional to 20,672,709.48, 28,527,853.86 and 11,505,155.40 is: 15,876,844.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,709.48 : 28,527,853.86 = 11,505,155.40 : x
  2. Step 2: Convert to fraction form
    20,672,709.48/28,527,853.86 = 11,505,155.40/x
  3. Step 3: Cross multiply
    20,672,709.48x = 28,527,853.86 × 11,505,155.40
  4. Step 4: Simplify right side
    20,672,709.48x = 328,217,391,887,789.88
  5. Step 5: Solve for x
    x = 328,217,391,887,789.88/20,672,709.48
  6. Step 6: Final answer
    x = 15,876,844.41

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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.