Home / 21,500,781-29,671,077.78-11,842,989

Finding the Fourth Proportional to 21,500,781, 29,671,077.78 and 11,842,989

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Solution

The fourth proportional to 21,500,781, 29,671,077.78 and 11,842,989 is: 16,343,324.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,500,781 : 29,671,077.78 = 11,842,989 : x
  2. Step 2: Convert to fraction form
    21,500,781/29,671,077.78 = 11,842,989/x
  3. Step 3: Cross multiply
    21,500,781x = 29,671,077.78 × 11,842,989
  4. Step 4: Simplify right side
    21,500,781x = 351,394,247,766,684.44
  5. Step 5: Solve for x
    x = 351,394,247,766,684.44/21,500,781
  6. Step 6: Final answer
    x = 16,343,324.82

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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.