Home / 21,341,889.20-31,970,843.40-12,796,842.80

Finding the Fourth Proportional to 21,341,889.20, 31,970,843.40 and 12,796,842.80

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Solution

The fourth proportional to 21,341,889.20, 31,970,843.40 and 12,796,842.80 is: 19,170,086.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341,889.20 : 31,970,843.40 = 12,796,842.80 : x
  2. Step 2: Convert to fraction form
    21,341,889.20/31,970,843.40 = 12,796,842.80/x
  3. Step 3: Cross multiply
    21,341,889.20x = 31,970,843.40 × 12,796,842.80
  4. Step 4: Simplify right side
    21,341,889.20x = 409,125,857,173,217.50
  5. Step 5: Solve for x
    x = 409,125,857,173,217.50/21,341,889.20
  6. Step 6: Final answer
    x = 19,170,086.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.