Home / 21,257,690,998.20-31,886,536,497.30-12,992,720,566.20

Finding the Fourth Proportional to 21,257,690,998.20, 31,886,536,497.30 and 12,992,720,566.20

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Solution

The fourth proportional to 21,257,690,998.20, 31,886,536,497.30 and 12,992,720,566.20 is: 19,489,080,849.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257,690,998.20 : 31,886,536,497.30 = 12,992,720,566.20 : x
  2. Step 2: Convert to fraction form
    21,257,690,998.20/31,886,536,497.30 = 12,992,720,566.20/x
  3. Step 3: Cross multiply
    21,257,690,998.20x = 31,886,536,497.30 × 12,992,720,566.20
  4. Step 4: Simplify right side
    21,257,690,998.20x = 414,292,858,533,356,634,112
  5. Step 5: Solve for x
    x = 414,292,858,533,356,634,112/21,257,690,998.20
  6. Step 6: Final answer
    x = 19,489,080,849.30

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Double scale
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1.5x scale

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.