Home / 12,820,542.12-17,691,647.04-7,018,201.44

Finding the Fourth Proportional to 12,820,542.12, 17,691,647.04 and 7,018,201.44

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Solution

The fourth proportional to 12,820,542.12, 17,691,647.04 and 7,018,201.44 is: 9,684,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820,542.12 : 17,691,647.04 = 7,018,201.44 : x
  2. Step 2: Convert to fraction form
    12,820,542.12/17,691,647.04 = 7,018,201.44/x
  3. Step 3: Cross multiply
    12,820,542.12x = 17,691,647.04 × 7,018,201.44
  4. Step 4: Simplify right side
    12,820,542.12x = 124,163,542,732,099.73
  5. Step 5: Solve for x
    x = 124,163,542,732,099.73/12,820,542.12
  6. Step 6: Final answer
    x = 9,684,734.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.