Home / 20,915,836.86-28,864,555.80-11,623,798.57

Finding the Fourth Proportional to 20,915,836.86, 28,864,555.80 and 11,623,798.57

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Solution

The fourth proportional to 20,915,836.86, 28,864,555.80 and 11,623,798.57 is: 16,041,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,836.86 : 28,864,555.80 = 11,623,798.57 : x
  2. Step 2: Convert to fraction form
    20,915,836.86/28,864,555.80 = 11,623,798.57/x
  3. Step 3: Cross multiply
    20,915,836.86x = 28,864,555.80 × 11,623,798.57
  4. Step 4: Simplify right side
    20,915,836.86x = 335,515,782,370,095.62
  5. Step 5: Solve for x
    x = 335,515,782,370,095.62/20,915,836.86
  6. Step 6: Final answer
    x = 16,041,231.56

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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.