Home / 20,676,414.78-28,532,983.59-12,945,722.94

Finding the Fourth Proportional to 20,676,414.78, 28,532,983.59 and 12,945,722.94

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Solution

The fourth proportional to 20,676,414.78, 28,532,983.59 and 12,945,722.94 is: 17,864,804.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676,414.78 : 28,532,983.59 = 12,945,722.94 : x
  2. Step 2: Convert to fraction form
    20,676,414.78/28,532,983.59 = 12,945,722.94/x
  3. Step 3: Cross multiply
    20,676,414.78x = 28,532,983.59 × 12,945,722.94
  4. Step 4: Simplify right side
    20,676,414.78x = 369,380,100,207,706.56
  5. Step 5: Solve for x
    x = 369,380,100,207,706.56/20,676,414.78
  6. Step 6: Final answer
    x = 17,864,804.13

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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.