Home / 12,115,315.20-18,172,972.80-7,332,346.20

Finding the Fourth Proportional to 12,115,315.20, 18,172,972.80 and 7,332,346.20

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Solution

The fourth proportional to 12,115,315.20, 18,172,972.80 and 7,332,346.20 is: 10,998,519.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115,315.20 : 18,172,972.80 = 7,332,346.20 : x
  2. Step 2: Convert to fraction form
    12,115,315.20/18,172,972.80 = 7,332,346.20/x
  3. Step 3: Cross multiply
    12,115,315.20x = 18,172,972.80 × 7,332,346.20
  4. Step 4: Simplify right side
    12,115,315.20x = 133,250,528,052,783.38
  5. Step 5: Solve for x
    x = 133,250,528,052,783.38/12,115,315.20
  6. Step 6: Final answer
    x = 10,998,519.30

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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.