Home / 21,139,942.20-31,709,913.30-7,675,020.60

Finding the Fourth Proportional to 21,139,942.20, 31,709,913.30 and 7,675,020.60

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Solution

The fourth proportional to 21,139,942.20, 31,709,913.30 and 7,675,020.60 is: 11,512,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,942.20 : 31,709,913.30 = 7,675,020.60 : x
  2. Step 2: Convert to fraction form
    21,139,942.20/31,709,913.30 = 7,675,020.60/x
  3. Step 3: Cross multiply
    21,139,942.20x = 31,709,913.30 × 7,675,020.60
  4. Step 4: Simplify right side
    21,139,942.20x = 243,374,237,801,713.97
  5. Step 5: Solve for x
    x = 243,374,237,801,713.97/21,139,942.20
  6. Step 6: Final answer
    x = 11,512,530.90

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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.