Home / 18,788,121.09-28,134,339.64-12,378,942.63

Finding the Fourth Proportional to 18,788,121.09, 28,134,339.64 and 12,378,942.63

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Solution

The fourth proportional to 18,788,121.09, 28,134,339.64 and 12,378,942.63 is: 18,536,892.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788,121.09 : 28,134,339.64 = 12,378,942.63 : x
  2. Step 2: Convert to fraction form
    18,788,121.09/28,134,339.64 = 12,378,942.63/x
  3. Step 3: Cross multiply
    18,788,121.09x = 28,134,339.64 × 12,378,942.63
  4. Step 4: Simplify right side
    18,788,121.09x = 348,273,376,200,043.75
  5. Step 5: Solve for x
    x = 348,273,376,200,043.75/18,788,121.09
  6. Step 6: Final answer
    x = 18,536,892.25

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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.