Home / 20,383,180.80-28,127,946.15-11,090,789.12

Finding the Fourth Proportional to 20,383,180.80, 28,127,946.15 and 11,090,789.12

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Solution

The fourth proportional to 20,383,180.80, 28,127,946.15 and 11,090,789.12 is: 15,304,830.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383,180.80 : 28,127,946.15 = 11,090,789.12 : x
  2. Step 2: Convert to fraction form
    20,383,180.80/28,127,946.15 = 11,090,789.12/x
  3. Step 3: Cross multiply
    20,383,180.80x = 28,127,946.15 × 11,090,789.12
  4. Step 4: Simplify right side
    20,383,180.80x = 311,961,118,987,726.12
  5. Step 5: Solve for x
    x = 311,961,118,987,726.12/20,383,180.80
  6. Step 6: Final answer
    x = 15,304,830.10

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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.