Home / 21,275,145,201.15-31,912,717,801.73-12,894,533,207.55

Finding the Fourth Proportional to 21,275,145,201.15, 31,912,717,801.73 and 12,894,533,207.55

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Solution

The fourth proportional to 21,275,145,201.15, 31,912,717,801.73 and 12,894,533,207.55 is: 19,341,799,811.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,145,201.15 : 31,912,717,801.73 = 12,894,533,207.55 : x
  2. Step 2: Convert to fraction form
    21,275,145,201.15/31,912,717,801.73 = 12,894,533,207.55/x
  3. Step 3: Cross multiply
    21,275,145,201.15x = 31,912,717,801.73 × 12,894,533,207.55
  4. Step 4: Simplify right side
    21,275,145,201.15x = 411,499,599,437,514,997,760
  5. Step 5: Solve for x
    x = 411,499,599,437,514,997,760/21,275,145,201.15
  6. Step 6: Final answer
    x = 19,341,799,811.33

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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.