Home / 18,589,431.20-25,656,187.56-13,379,666.72

Finding the Fourth Proportional to 18,589,431.20, 25,656,187.56 and 13,379,666.72

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Solution

The fourth proportional to 18,589,431.20, 25,656,187.56 and 13,379,666.72 is: 18,465,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589,431.20 : 25,656,187.56 = 13,379,666.72 : x
  2. Step 2: Convert to fraction form
    18,589,431.20/25,656,187.56 = 13,379,666.72/x
  3. Step 3: Cross multiply
    18,589,431.20x = 25,656,187.56 × 13,379,666.72
  4. Step 4: Simplify right side
    18,589,431.20x = 343,271,238,858,610
  5. Step 5: Solve for x
    x = 343,271,238,858,610/18,589,431.20
  6. Step 6: Final answer
    x = 18,465,935.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.