Home / 20,936,136.80-31,404,205.20-19,424,482.40

Finding the Fourth Proportional to 20,936,136.80, 31,404,205.20 and 19,424,482.40

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Solution

The fourth proportional to 20,936,136.80, 31,404,205.20 and 19,424,482.40 is: 29,136,723.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936,136.80 : 31,404,205.20 = 19,424,482.40 : x
  2. Step 2: Convert to fraction form
    20,936,136.80/31,404,205.20 = 19,424,482.40/x
  3. Step 3: Cross multiply
    20,936,136.80x = 31,404,205.20 × 19,424,482.40
  4. Step 4: Simplify right side
    20,936,136.80x = 610,010,431,193,388.38
  5. Step 5: Solve for x
    x = 610,010,431,193,388.38/20,936,136.80
  6. Step 6: Final answer
    x = 29,136,723.60

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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.