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Finding the Fourth Proportional to 20,571,690.70, 30,857,536.05 and 20,571,690.70

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Solution

The fourth proportional to 20,571,690.70, 30,857,536.05 and 20,571,690.70 is: 30,857,536.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571,690.70 : 30,857,536.05 = 20,571,690.70 : x
  2. Step 2: Convert to fraction form
    20,571,690.70/30,857,536.05 = 20,571,690.70/x
  3. Step 3: Cross multiply
    20,571,690.70x = 30,857,536.05 × 20,571,690.70
  4. Step 4: Simplify right side
    20,571,690.70x = 634,791,687,384,699.75
  5. Step 5: Solve for x
    x = 634,791,687,384,699.75/20,571,690.70
  6. Step 6: Final answer
    x = 30,857,536.05

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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.