Home / 18,399,163.72-25,391,012.45-10,139,521.85

Finding the Fourth Proportional to 18,399,163.72, 25,391,012.45 and 10,139,521.85

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Solution

The fourth proportional to 18,399,163.72, 25,391,012.45 and 10,139,521.85 is: 13,992,631.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399,163.72 : 25,391,012.45 = 10,139,521.85 : x
  2. Step 2: Convert to fraction form
    18,399,163.72/25,391,012.45 = 10,139,521.85/x
  3. Step 3: Cross multiply
    18,399,163.72x = 25,391,012.45 × 10,139,521.85
  4. Step 4: Simplify right side
    18,399,163.72x = 257,452,725,530,397
  5. Step 5: Solve for x
    x = 257,452,725,530,397/18,399,163.72
  6. Step 6: Final answer
    x = 13,992,631.92

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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.