Home / 20,911,301.20-31,379,239.19-8,779,831.76

Finding the Fourth Proportional to 20,911,301.20, 31,379,239.19 and 8,779,831.76

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Solution

The fourth proportional to 20,911,301.20, 31,379,239.19 and 8,779,831.76 is: 13,174,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911,301.20 : 31,379,239.19 = 8,779,831.76 : x
  2. Step 2: Convert to fraction form
    20,911,301.20/31,379,239.19 = 8,779,831.76/x
  3. Step 3: Cross multiply
    20,911,301.20x = 31,379,239.19 × 8,779,831.76
  4. Step 4: Simplify right side
    20,911,301.20x = 275,504,440,801,099.50
  5. Step 5: Solve for x
    x = 275,504,440,801,099.50/20,911,301.20
  6. Step 6: Final answer
    x = 13,174,906.63

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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.