Home / 21,002,557.80-31,503,836.70-18,770,505.60

Finding the Fourth Proportional to 21,002,557.80, 31,503,836.70 and 18,770,505.60

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Solution

The fourth proportional to 21,002,557.80, 31,503,836.70 and 18,770,505.60 is: 28,155,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,557.80 : 31,503,836.70 = 18,770,505.60 : x
  2. Step 2: Convert to fraction form
    21,002,557.80/31,503,836.70 = 18,770,505.60/x
  3. Step 3: Cross multiply
    21,002,557.80x = 31,503,836.70 × 18,770,505.60
  4. Step 4: Simplify right side
    21,002,557.80x = 591,342,943,198,835.50
  5. Step 5: Solve for x
    x = 591,342,943,198,835.50/21,002,557.80
  6. Step 6: Final answer
    x = 28,155,758.40

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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.