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Finding the Fourth Proportional to 20,084,917.20, 30,127,375.80 and 10,503,232.80

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Solution

The fourth proportional to 20,084,917.20, 30,127,375.80 and 10,503,232.80 is: 15,754,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,084,917.20 : 30,127,375.80 = 10,503,232.80 : x
  2. Step 2: Convert to fraction form
    20,084,917.20/30,127,375.80 = 10,503,232.80/x
  3. Step 3: Cross multiply
    20,084,917.20x = 30,127,375.80 × 10,503,232.80
  4. Step 4: Simplify right side
    20,084,917.20x = 316,434,841,680,486.25
  5. Step 5: Solve for x
    x = 316,434,841,680,486.25/20,084,917.20
  6. Step 6: Final answer
    x = 15,754,849.20

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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.