Home / 21,318,900.69-31,971,190.43-6,938,586.62

Finding the Fourth Proportional to 21,318,900.69, 31,971,190.43 and 6,938,586.62

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Solution

The fourth proportional to 21,318,900.69, 31,971,190.43 and 6,938,586.62 is: 10,405,549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318,900.69 : 31,971,190.43 = 6,938,586.62 : x
  2. Step 2: Convert to fraction form
    21,318,900.69/31,971,190.43 = 6,938,586.62/x
  3. Step 3: Cross multiply
    21,318,900.69x = 31,971,190.43 × 6,938,586.62
  4. Step 4: Simplify right side
    21,318,900.69x = 221,834,874,143,070.06
  5. Step 5: Solve for x
    x = 221,834,874,143,070.06/21,318,900.69
  6. Step 6: Final answer
    x = 10,405,549.39

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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.