Home / 13,515,399.72-18,651,103.20-7,320,292.38

Finding the Fourth Proportional to 13,515,399.72, 18,651,103.20 and 7,320,292.38

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Solution

The fourth proportional to 13,515,399.72, 18,651,103.20 and 7,320,292.38 is: 10,101,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515,399.72 : 18,651,103.20 = 7,320,292.38 : x
  2. Step 2: Convert to fraction form
    13,515,399.72/18,651,103.20 = 7,320,292.38/x
  3. Step 3: Cross multiply
    13,515,399.72x = 18,651,103.20 × 7,320,292.38
  4. Step 4: Simplify right side
    13,515,399.72x = 136,531,528,633,553.61
  5. Step 5: Solve for x
    x = 136,531,528,633,553.61/13,515,399.72
  6. Step 6: Final answer
    x = 10,101,923.10

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1.5x scale

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.