Home / 21,028,578.90-31,542,868.35-9,061,314.90

Finding the Fourth Proportional to 21,028,578.90, 31,542,868.35 and 9,061,314.90

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Solution

The fourth proportional to 21,028,578.90, 31,542,868.35 and 9,061,314.90 is: 13,591,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028,578.90 : 31,542,868.35 = 9,061,314.90 : x
  2. Step 2: Convert to fraction form
    21,028,578.90/31,542,868.35 = 9,061,314.90/x
  3. Step 3: Cross multiply
    21,028,578.90x = 31,542,868.35 × 9,061,314.90
  4. Step 4: Simplify right side
    21,028,578.90x = 285,819,862,968,593.44
  5. Step 5: Solve for x
    x = 285,819,862,968,593.44/21,028,578.90
  6. Step 6: Final answer
    x = 13,591,972.35

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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.