Home / 21,228,086.80-31,842,130.20-20,873,792.80

Finding the Fourth Proportional to 21,228,086.80, 31,842,130.20 and 20,873,792.80

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Solution

The fourth proportional to 21,228,086.80, 31,842,130.20 and 20,873,792.80 is: 31,310,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228,086.80 : 31,842,130.20 = 20,873,792.80 : x
  2. Step 2: Convert to fraction form
    21,228,086.80/31,842,130.20 = 20,873,792.80/x
  3. Step 3: Cross multiply
    21,228,086.80x = 31,842,130.20 × 20,873,792.80
  4. Step 4: Simplify right side
    21,228,086.80x = 664,666,028,105,422.62
  5. Step 5: Solve for x
    x = 664,666,028,105,422.62/21,228,086.80
  6. Step 6: Final answer
    x = 31,310,689.20

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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.