Home / 21,005,876.41-28,988,622.02-11,713,355.78

Finding the Fourth Proportional to 21,005,876.41, 28,988,622.02 and 11,713,355.78

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Solution

The fourth proportional to 21,005,876.41, 28,988,622.02 and 11,713,355.78 is: 16,164,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,876.41 : 28,988,622.02 = 11,713,355.78 : x
  2. Step 2: Convert to fraction form
    21,005,876.41/28,988,622.02 = 11,713,355.78/x
  3. Step 3: Cross multiply
    21,005,876.41x = 28,988,622.02 × 11,713,355.78
  4. Step 4: Simplify right side
    21,005,876.41x = 339,554,043,292,202.25
  5. Step 5: Solve for x
    x = 339,554,043,292,202.25/21,005,876.41
  6. Step 6: Final answer
    x = 16,164,716.80

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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.