Home / 18,788,121.34-28,134,340.01-12,378,942.88

Finding the Fourth Proportional to 18,788,121.34, 28,134,340.01 and 12,378,942.88

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Solution

The fourth proportional to 18,788,121.34, 28,134,340.01 and 12,378,942.88 is: 18,536,892.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788,121.34 : 28,134,340.01 = 12,378,942.88 : x
  2. Step 2: Convert to fraction form
    18,788,121.34/28,134,340.01 = 12,378,942.88/x
  3. Step 3: Cross multiply
    18,788,121.34x = 28,134,340.01 × 12,378,942.88
  4. Step 4: Simplify right side
    18,788,121.34x = 348,273,387,950,288.69
  5. Step 5: Solve for x
    x = 348,273,387,950,288.69/18,788,121.34
  6. Step 6: Final answer
    x = 18,536,892.63

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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.