Home / 20,956,995.42-28,920,604.95-11,789,635.74

Finding the Fourth Proportional to 20,956,995.42, 28,920,604.95 and 11,789,635.74

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Solution

The fourth proportional to 20,956,995.42, 28,920,604.95 and 11,789,635.74 is: 16,269,669.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,995.42 : 28,920,604.95 = 11,789,635.74 : x
  2. Step 2: Convert to fraction form
    20,956,995.42/28,920,604.95 = 11,789,635.74/x
  3. Step 3: Cross multiply
    20,956,995.42x = 28,920,604.95 × 11,789,635.74
  4. Step 4: Simplify right side
    20,956,995.42x = 340,963,397,740,940.94
  5. Step 5: Solve for x
    x = 340,963,397,740,940.94/20,956,995.42
  6. Step 6: Final answer
    x = 16,269,669.91

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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.