Home / 20,882,573,945.40-28,818,648,135.79-11,728,715,918.88

Finding the Fourth Proportional to 20,882,573,945.40, 28,818,648,135.79 and 11,728,715,918.88

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Solution

The fourth proportional to 20,882,573,945.40, 28,818,648,135.79 and 11,728,715,918.88 is: 16,186,018,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882,573,945.40 : 28,818,648,135.79 = 11,728,715,918.88 : x
  2. Step 2: Convert to fraction form
    20,882,573,945.40/28,818,648,135.79 = 11,728,715,918.88/x
  3. Step 3: Cross multiply
    20,882,573,945.40x = 28,818,648,135.79 × 11,728,715,918.88
  4. Step 4: Simplify right side
    20,882,573,945.40x = 338,005,737,150,650,580,992
  5. Step 5: Solve for x
    x = 338,005,737,150,650,580,992/20,882,573,945.40
  6. Step 6: Final answer
    x = 16,186,018,928.24

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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.