Home / 21,500,780.25-29,671,076.75-11,842,988.25

Finding the Fourth Proportional to 21,500,780.25, 29,671,076.75 and 11,842,988.25

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Solution

The fourth proportional to 21,500,780.25, 29,671,076.75 and 11,842,988.25 is: 16,343,323.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,500,780.25 : 29,671,076.75 = 11,842,988.25 : x
  2. Step 2: Convert to fraction form
    21,500,780.25/29,671,076.75 = 11,842,988.25/x
  3. Step 3: Cross multiply
    21,500,780.25x = 29,671,076.75 × 11,842,988.25
  4. Step 4: Simplify right side
    21,500,780.25x = 351,394,213,255,883.25
  5. Step 5: Solve for x
    x = 351,394,213,255,883.25/21,500,780.25
  6. Step 6: Final answer
    x = 16,343,323.79

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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.