Home / 21,712,356.97-29,965,443.88-12,420,783.58

Finding the Fourth Proportional to 21,712,356.97, 29,965,443.88 and 12,420,783.58

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Solution

The fourth proportional to 21,712,356.97, 29,965,443.88 and 12,420,783.58 is: 17,142,049.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712,356.97 : 29,965,443.88 = 12,420,783.58 : x
  2. Step 2: Convert to fraction form
    21,712,356.97/29,965,443.88 = 12,420,783.58/x
  3. Step 3: Cross multiply
    21,712,356.97x = 29,965,443.88 × 12,420,783.58
  4. Step 4: Simplify right side
    21,712,356.97x = 372,194,293,312,115.50
  5. Step 5: Solve for x
    x = 372,194,293,312,115.50/21,712,356.97
  6. Step 6: Final answer
    x = 17,142,049.29

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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.