Home / 21,479,815.20-32,257,047.60-20,807,968.80

Finding the Fourth Proportional to 21,479,815.20, 32,257,047.60 and 20,807,968.80

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Solution

The fourth proportional to 21,479,815.20, 32,257,047.60 and 20,807,968.80 is: 31,248,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479,815.20 : 32,257,047.60 = 20,807,968.80 : x
  2. Step 2: Convert to fraction form
    21,479,815.20/32,257,047.60 = 20,807,968.80/x
  3. Step 3: Cross multiply
    21,479,815.20x = 32,257,047.60 × 20,807,968.80
  4. Step 4: Simplify right side
    21,479,815.20x = 671,203,640,040,914.88
  5. Step 5: Solve for x
    x = 671,203,640,040,914.88/21,479,815.20
  6. Step 6: Final answer
    x = 31,248,110.55

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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.