Home / 18,930,669.60-28,398,940.36-8,000,905.28

Finding the Fourth Proportional to 18,930,669.60, 28,398,940.36 and 8,000,905.28

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Solution

The fourth proportional to 18,930,669.60, 28,398,940.36 and 8,000,905.28 is: 12,002,598.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930,669.60 : 28,398,940.36 = 8,000,905.28 : x
  2. Step 2: Convert to fraction form
    18,930,669.60/28,398,940.36 = 8,000,905.28/x
  3. Step 3: Cross multiply
    18,930,669.60x = 28,398,940.36 × 8,000,905.28
  4. Step 4: Simplify right side
    18,930,669.60x = 227,217,231,872,729.09
  5. Step 5: Solve for x
    x = 227,217,231,872,729.09/18,930,669.60
  6. Step 6: Final answer
    x = 12,002,598.78

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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.