Home / 12,628,780.77-18,940,275.21-3,531,517.68

Finding the Fourth Proportional to 12,628,780.77, 18,940,275.21 and 3,531,517.68

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Solution

The fourth proportional to 12,628,780.77, 18,940,275.21 and 3,531,517.68 is: 5,296,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628,780.77 : 18,940,275.21 = 3,531,517.68 : x
  2. Step 2: Convert to fraction form
    12,628,780.77/18,940,275.21 = 3,531,517.68/x
  3. Step 3: Cross multiply
    12,628,780.77x = 18,940,275.21 × 3,531,517.68
  4. Step 4: Simplify right side
    12,628,780.77x = 66,887,916,768,180.72
  5. Step 5: Solve for x
    x = 66,887,916,768,180.72/12,628,780.77
  6. Step 6: Final answer
    x = 5,296,466.70

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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.