Home / 21,341,872.20-31,970,817.90-12,796,825.80

Finding the Fourth Proportional to 21,341,872.20, 31,970,817.90 and 12,796,825.80

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Solution

The fourth proportional to 21,341,872.20, 31,970,817.90 and 12,796,825.80 is: 19,170,060.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341,872.20 : 31,970,817.90 = 12,796,825.80 : x
  2. Step 2: Convert to fraction form
    21,341,872.20/31,970,817.90 = 12,796,825.80/x
  3. Step 3: Cross multiply
    21,341,872.20x = 31,970,817.90 × 12,796,825.80
  4. Step 4: Simplify right side
    21,341,872.20x = 409,124,987,349,821.81
  5. Step 5: Solve for x
    x = 409,124,987,349,821.81/21,341,872.20
  6. Step 6: Final answer
    x = 19,170,060.79

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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.