Home / 21,032,338.40-31,560,949.20-15,338,232.80

Finding the Fourth Proportional to 21,032,338.40, 31,560,949.20 and 15,338,232.80

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Solution

The fourth proportional to 21,032,338.40, 31,560,949.20 and 15,338,232.80 is: 23,016,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032,338.40 : 31,560,949.20 = 15,338,232.80 : x
  2. Step 2: Convert to fraction form
    21,032,338.40/31,560,949.20 = 15,338,232.80/x
  3. Step 3: Cross multiply
    21,032,338.40x = 31,560,949.20 × 15,338,232.80
  4. Step 4: Simplify right side
    21,032,338.40x = 484,089,186,218,573.75
  5. Step 5: Solve for x
    x = 484,089,186,218,573.75/21,032,338.40
  6. Step 6: Final answer
    x = 23,016,422.47

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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.