Home / 20,785,076.78-28,684,010.03-11,366,421.44

Finding the Fourth Proportional to 20,785,076.78, 28,684,010.03 and 11,366,421.44

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Solution

The fourth proportional to 20,785,076.78, 28,684,010.03 and 11,366,421.44 is: 15,685,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,076.78 : 28,684,010.03 = 11,366,421.44 : x
  2. Step 2: Convert to fraction form
    20,785,076.78/28,684,010.03 = 11,366,421.44/x
  3. Step 3: Cross multiply
    20,785,076.78x = 28,684,010.03 × 11,366,421.44
  4. Step 4: Simplify right side
    20,785,076.78x = 326,034,546,605,044.94
  5. Step 5: Solve for x
    x = 326,034,546,605,044.94/20,785,076.78
  6. Step 6: Final answer
    x = 15,685,991.93

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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.