Home / 15,320,865.69-21,142,784.70-8,351,556.57

Finding the Fourth Proportional to 15,320,865.69, 21,142,784.70 and 8,351,556.57

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Solution

The fourth proportional to 15,320,865.69, 21,142,784.70 and 8,351,556.57 is: 11,525,142.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320,865.69 : 21,142,784.70 = 8,351,556.57 : x
  2. Step 2: Convert to fraction form
    15,320,865.69/21,142,784.70 = 8,351,556.57/x
  3. Step 3: Cross multiply
    15,320,865.69x = 21,142,784.70 × 8,351,556.57
  4. Step 4: Simplify right side
    15,320,865.69x = 176,575,162,469,380.47
  5. Step 5: Solve for x
    x = 176,575,162,469,380.47/15,320,865.69
  6. Step 6: Final answer
    x = 11,525,142.64

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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.