Home / 21,796,721.52-30,080,408.80-12,138,929.52

Finding the Fourth Proportional to 21,796,721.52, 30,080,408.80 and 12,138,929.52

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Solution

The fourth proportional to 21,796,721.52, 30,080,408.80 and 12,138,929.52 is: 16,752,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,796,721.52 : 30,080,408.80 = 12,138,929.52 : x
  2. Step 2: Convert to fraction form
    21,796,721.52/30,080,408.80 = 12,138,929.52/x
  3. Step 3: Cross multiply
    21,796,721.52x = 30,080,408.80 × 12,138,929.52
  4. Step 4: Simplify right side
    21,796,721.52x = 365,143,962,355,987.75
  5. Step 5: Solve for x
    x = 365,143,962,355,987.75/21,796,721.52
  6. Step 6: Final answer
    x = 16,752,242.40

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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.