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Finding the Fourth Proportional to 20,402,214.53, 30,603,321.79 and 20,402,214.53

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Solution

The fourth proportional to 20,402,214.53, 30,603,321.79 and 20,402,214.53 is: 30,603,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402,214.53 : 30,603,321.79 = 20,402,214.53 : x
  2. Step 2: Convert to fraction form
    20,402,214.53/30,603,321.79 = 20,402,214.53/x
  3. Step 3: Cross multiply
    20,402,214.53x = 30,603,321.79 × 20,402,214.53
  4. Step 4: Simplify right side
    20,402,214.53x = 624,375,536,286,181.50
  5. Step 5: Solve for x
    x = 624,375,536,286,181.50/20,402,214.53
  6. Step 6: Final answer
    x = 30,603,321.79

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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.