Home / 21,275,440.20-31,903,829.10-8,491,696.20

Finding the Fourth Proportional to 21,275,440.20, 31,903,829.10 and 8,491,696.20

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Solution

The fourth proportional to 21,275,440.20, 31,903,829.10 and 8,491,696.20 is: 12,733,819.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,440.20 : 31,903,829.10 = 8,491,696.20 : x
  2. Step 2: Convert to fraction form
    21,275,440.20/31,903,829.10 = 8,491,696.20/x
  3. Step 3: Cross multiply
    21,275,440.20x = 31,903,829.10 × 8,491,696.20
  4. Step 4: Simplify right side
    21,275,440.20x = 270,917,624,333,919.41
  5. Step 5: Solve for x
    x = 270,917,624,333,919.41/21,275,440.20
  6. Step 6: Final answer
    x = 12,733,819.93

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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.