Home / 21,139,945.20-31,709,917.80-7,675,023.60

Finding the Fourth Proportional to 21,139,945.20, 31,709,917.80 and 7,675,023.60

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Solution

The fourth proportional to 21,139,945.20, 31,709,917.80 and 7,675,023.60 is: 11,512,535.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,945.20 : 31,709,917.80 = 7,675,023.60 : x
  2. Step 2: Convert to fraction form
    21,139,945.20/31,709,917.80 = 7,675,023.60/x
  3. Step 3: Cross multiply
    21,139,945.20x = 31,709,917.80 × 7,675,023.60
  4. Step 4: Simplify right side
    21,139,945.20x = 243,374,367,469,060.06
  5. Step 5: Solve for x
    x = 243,374,367,469,060.06/21,139,945.20
  6. Step 6: Final answer
    x = 11,512,535.40

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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.