Home / 20,539,651.76-28,345,604.97-11,372,294.51

Finding the Fourth Proportional to 20,539,651.76, 28,345,604.97 and 11,372,294.51

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Solution

The fourth proportional to 20,539,651.76, 28,345,604.97 and 11,372,294.51 is: 15,694,256.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539,651.76 : 28,345,604.97 = 11,372,294.51 : x
  2. Step 2: Convert to fraction form
    20,539,651.76/28,345,604.97 = 11,372,294.51/x
  3. Step 3: Cross multiply
    20,539,651.76x = 28,345,604.97 × 11,372,294.51
  4. Step 4: Simplify right side
    20,539,651.76x = 322,354,567,641,231.69
  5. Step 5: Solve for x
    x = 322,354,567,641,231.69/20,539,651.76
  6. Step 6: Final answer
    x = 15,694,256.72

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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.