Home / 20,801,843.40-31,160,774.70-11,815,897.80

Finding the Fourth Proportional to 20,801,843.40, 31,160,774.70 and 11,815,897.80

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Solution

The fourth proportional to 20,801,843.40, 31,160,774.70 and 11,815,897.80 is: 17,699,995.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801,843.40 : 31,160,774.70 = 11,815,897.80 : x
  2. Step 2: Convert to fraction form
    20,801,843.40/31,160,774.70 = 11,815,897.80/x
  3. Step 3: Cross multiply
    20,801,843.40x = 31,160,774.70 × 11,815,897.80
  4. Step 4: Simplify right side
    20,801,843.40x = 368,192,529,224,025.69
  5. Step 5: Solve for x
    x = 368,192,529,224,025.69/20,801,843.40
  6. Step 6: Final answer
    x = 17,699,995.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.