Home / 20,553,131.21-28,363,320.25-11,261,053.91

Finding the Fourth Proportional to 20,553,131.21, 28,363,320.25 and 11,261,053.91

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Solution

The fourth proportional to 20,553,131.21, 28,363,320.25 and 11,261,053.91 is: 15,540,253.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553,131.21 : 28,363,320.25 = 11,261,053.91 : x
  2. Step 2: Convert to fraction form
    20,553,131.21/28,363,320.25 = 11,261,053.91/x
  3. Step 3: Cross multiply
    20,553,131.21x = 28,363,320.25 × 11,261,053.91
  4. Step 4: Simplify right side
    20,553,131.21x = 319,400,878,285,056.62
  5. Step 5: Solve for x
    x = 319,400,878,285,056.62/20,553,131.21
  6. Step 6: Final answer
    x = 15,540,253.94

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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.