Home / 13,122,123.72-18,108,542.02-7,320,906.36

Finding the Fourth Proportional to 13,122,123.72, 18,108,542.02 and 7,320,906.36

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Solution

The fourth proportional to 13,122,123.72, 18,108,542.02 and 7,320,906.36 is: 10,102,857.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,123.72 : 18,108,542.02 = 7,320,906.36 : x
  2. Step 2: Convert to fraction form
    13,122,123.72/18,108,542.02 = 7,320,906.36/x
  3. Step 3: Cross multiply
    13,122,123.72x = 18,108,542.02 × 7,320,906.36
  4. Step 4: Simplify right side
    13,122,123.72x = 132,570,940,444,545.25
  5. Step 5: Solve for x
    x = 132,570,940,444,545.25/13,122,123.72
  6. Step 6: Final answer
    x = 10,102,857.07

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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.