Home / 18,930,784-28,384,810.08-8,682,806.56

Finding the Fourth Proportional to 18,930,784, 28,384,810.08 and 8,682,806.56

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Solution

The fourth proportional to 18,930,784, 28,384,810.08 and 8,682,806.56 is: 13,018,996.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930,784 : 28,384,810.08 = 8,682,806.56 : x
  2. Step 2: Convert to fraction form
    18,930,784/28,384,810.08 = 8,682,806.56/x
  3. Step 3: Cross multiply
    18,930,784x = 28,384,810.08 × 8,682,806.56
  4. Step 4: Simplify right side
    18,930,784x = 246,459,815,166,978.12
  5. Step 5: Solve for x
    x = 246,459,815,166,978.12/18,930,784
  6. Step 6: Final answer
    x = 13,018,996.74

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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.