Home / 12,485,420.70-18,729,378.45-3,387,662.70

Finding the Fourth Proportional to 12,485,420.70, 18,729,378.45 and 3,387,662.70

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Solution

The fourth proportional to 12,485,420.70, 18,729,378.45 and 3,387,662.70 is: 5,081,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485,420.70 : 18,729,378.45 = 3,387,662.70 : x
  2. Step 2: Convert to fraction form
    12,485,420.70/18,729,378.45 = 3,387,662.70/x
  3. Step 3: Cross multiply
    12,485,420.70x = 18,729,378.45 × 3,387,662.70
  4. Step 4: Simplify right side
    12,485,420.70x = 63,448,816,769,248.81
  5. Step 5: Solve for x
    x = 63,448,816,769,248.81/12,485,420.70
  6. Step 6: Final answer
    x = 5,081,832.51

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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.