Home / 20,757,912.70-31,136,869.05-9,243,357.70

Finding the Fourth Proportional to 20,757,912.70, 31,136,869.05 and 9,243,357.70

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Solution

The fourth proportional to 20,757,912.70, 31,136,869.05 and 9,243,357.70 is: 13,865,036.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757,912.70 : 31,136,869.05 = 9,243,357.70 : x
  2. Step 2: Convert to fraction form
    20,757,912.70/31,136,869.05 = 9,243,357.70/x
  3. Step 3: Cross multiply
    20,757,912.70x = 31,136,869.05 × 9,243,357.70
  4. Step 4: Simplify right side
    20,757,912.70x = 287,809,218,287,209.19
  5. Step 5: Solve for x
    x = 287,809,218,287,209.19/20,757,912.70
  6. Step 6: Final answer
    x = 13,865,036.55

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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.