Home / 18,721,831.10-28,085,857.05-7,362,650.30

Finding the Fourth Proportional to 18,721,831.10, 28,085,857.05 and 7,362,650.30

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Solution

The fourth proportional to 18,721,831.10, 28,085,857.05 and 7,362,650.30 is: 11,045,198.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,831.10 : 28,085,857.05 = 7,362,650.30 : x
  2. Step 2: Convert to fraction form
    18,721,831.10/28,085,857.05 = 7,362,650.30/x
  3. Step 3: Cross multiply
    18,721,831.10x = 28,085,857.05 × 7,362,650.30
  4. Step 4: Simplify right side
    18,721,831.10x = 206,786,343,834,939.62
  5. Step 5: Solve for x
    x = 206,786,343,834,939.62/18,721,831.10
  6. Step 6: Final answer
    x = 11,045,198.66

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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.