Home / 20,820,363,753.94-28,732,101,980.44-11,909,692,506.94

Finding the Fourth Proportional to 20,820,363,753.94, 28,732,101,980.44 and 11,909,692,506.94

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Solution

The fourth proportional to 20,820,363,753.94, 28,732,101,980.44 and 11,909,692,506.94 is: 16,435,375,659.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820,363,753.94 : 28,732,101,980.44 = 11,909,692,506.94 : x
  2. Step 2: Convert to fraction form
    20,820,363,753.94/28,732,101,980.44 = 11,909,692,506.94/x
  3. Step 3: Cross multiply
    20,820,363,753.94x = 28,732,101,980.44 × 11,909,692,506.94
  4. Step 4: Simplify right side
    20,820,363,753.94x = 342,190,499,665,000,923,136
  5. Step 5: Solve for x
    x = 342,190,499,665,000,923,136/20,820,363,753.94
  6. Step 6: Final answer
    x = 16,435,375,659.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.