Home / 21,711,919.30-29,962,969.20-11,789,220.21

Finding the Fourth Proportional to 21,711,919.30, 29,962,969.20 and 11,789,220.21

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Solution

The fourth proportional to 21,711,919.30, 29,962,969.20 and 11,789,220.21 is: 16,269,406.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,711,919.30 : 29,962,969.20 = 11,789,220.21 : x
  2. Step 2: Convert to fraction form
    21,711,919.30/29,962,969.20 = 11,789,220.21/x
  3. Step 3: Cross multiply
    21,711,919.30x = 29,962,969.20 × 11,789,220.21
  4. Step 4: Simplify right side
    21,711,919.30x = 353,240,042,140,565.69
  5. Step 5: Solve for x
    x = 353,240,042,140,565.69/21,711,919.30
  6. Step 6: Final answer
    x = 16,269,406.55

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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.