Home / 20,103,978,658.12-30,116,737,073.34-15,661,597,403.56

Finding the Fourth Proportional to 20,103,978,658.12, 30,116,737,073.34 and 15,661,597,403.56

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Solution

The fourth proportional to 20,103,978,658.12, 30,116,737,073.34 and 15,661,597,403.56 is: 23,461,834,056.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103,978,658.12 : 30,116,737,073.34 = 15,661,597,403.56 : x
  2. Step 2: Convert to fraction form
    20,103,978,658.12/30,116,737,073.34 = 15,661,597,403.56/x
  3. Step 3: Cross multiply
    20,103,978,658.12x = 30,116,737,073.34 × 15,661,597,403.56
  4. Step 4: Simplify right side
    20,103,978,658.12x = 471,676,211,151,520,923,648
  5. Step 5: Solve for x
    x = 471,676,211,151,520,923,648/20,103,978,658.12
  6. Step 6: Final answer
    x = 23,461,834,056.46

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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.