Home / 12,390,821.66-18,579,850.77-5,561,540.28

Finding the Fourth Proportional to 12,390,821.66, 18,579,850.77 and 5,561,540.28

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Solution

The fourth proportional to 12,390,821.66, 18,579,850.77 and 5,561,540.28 is: 8,339,446.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390,821.66 : 18,579,850.77 = 5,561,540.28 : x
  2. Step 2: Convert to fraction form
    12,390,821.66/18,579,850.77 = 5,561,540.28/x
  3. Step 3: Cross multiply
    12,390,821.66x = 18,579,850.77 × 5,561,540.28
  4. Step 4: Simplify right side
    12,390,821.66x = 103,332,588,474,599.80
  5. Step 5: Solve for x
    x = 103,332,588,474,599.80/12,390,821.66
  6. Step 6: Final answer
    x = 8,339,446.03

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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.