Home / 21,295,023.75-29,387,132.79-12,128,519.43

Finding the Fourth Proportional to 21,295,023.75, 29,387,132.79 and 12,128,519.43

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Solution

The fourth proportional to 21,295,023.75, 29,387,132.79 and 12,128,519.43 is: 16,737,356.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295,023.75 : 29,387,132.79 = 12,128,519.43 : x
  2. Step 2: Convert to fraction form
    21,295,023.75/29,387,132.79 = 12,128,519.43/x
  3. Step 3: Cross multiply
    21,295,023.75x = 29,387,132.79 × 12,128,519.43
  4. Step 4: Simplify right side
    21,295,023.75x = 356,422,411,035,505.06
  5. Step 5: Solve for x
    x = 356,422,411,035,505.06/21,295,023.75
  6. Step 6: Final answer
    x = 16,737,356.82

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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.