Home / 21,242,275,478.91-31,847,704,899.98-12,846,314,542.86

Finding the Fourth Proportional to 21,242,275,478.91, 31,847,704,899.98 and 12,846,314,542.86

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Solution

The fourth proportional to 21,242,275,478.91, 31,847,704,899.98 and 12,846,314,542.86 is: 19,259,972,172.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242,275,478.91 : 31,847,704,899.98 = 12,846,314,542.86 : x
  2. Step 2: Convert to fraction form
    21,242,275,478.91/31,847,704,899.98 = 12,846,314,542.86/x
  3. Step 3: Cross multiply
    21,242,275,478.91x = 31,847,704,899.98 × 12,846,314,542.86
  4. Step 4: Simplify right side
    21,242,275,478.91x = 409,125,634,613,262,548,992
  5. Step 5: Solve for x
    x = 409,125,634,613,262,548,992/21,242,275,478.91
  6. Step 6: Final answer
    x = 19,259,972,172.92

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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.