Home / 21,294,760.60-31,942,140.90-12,791,704.60

Finding the Fourth Proportional to 21,294,760.60, 31,942,140.90 and 12,791,704.60

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Solution

The fourth proportional to 21,294,760.60, 31,942,140.90 and 12,791,704.60 is: 19,187,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294,760.60 : 31,942,140.90 = 12,791,704.60 : x
  2. Step 2: Convert to fraction form
    21,294,760.60/31,942,140.90 = 12,791,704.60/x
  3. Step 3: Cross multiply
    21,294,760.60x = 31,942,140.90 × 12,791,704.60
  4. Step 4: Simplify right side
    21,294,760.60x = 408,594,430,684,378.12
  5. Step 5: Solve for x
    x = 408,594,430,684,378.12/21,294,760.60
  6. Step 6: Final answer
    x = 19,187,556.90

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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.