Home / 12,288,651.60-18,446,974.20-7,242,805.20

Finding the Fourth Proportional to 12,288,651.60, 18,446,974.20 and 7,242,805.20

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Solution

The fourth proportional to 12,288,651.60, 18,446,974.20 and 7,242,805.20 is: 10,872,457.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288,651.60 : 18,446,974.20 = 7,242,805.20 : x
  2. Step 2: Convert to fraction form
    12,288,651.60/18,446,974.20 = 7,242,805.20/x
  3. Step 3: Cross multiply
    12,288,651.60x = 18,446,974.20 × 7,242,805.20
  4. Step 4: Simplify right side
    12,288,651.60x = 133,607,840,660,025.84
  5. Step 5: Solve for x
    x = 133,607,840,660,025.84/12,288,651.60
  6. Step 6: Final answer
    x = 10,872,457.37

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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.