Home / 13,220,869.32-18,245,161.50-7,420,010.64

Finding the Fourth Proportional to 13,220,869.32, 18,245,161.50 and 7,420,010.64

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Solution

The fourth proportional to 13,220,869.32, 18,245,161.50 and 7,420,010.64 is: 10,239,817.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220,869.32 : 18,245,161.50 = 7,420,010.64 : x
  2. Step 2: Convert to fraction form
    13,220,869.32/18,245,161.50 = 7,420,010.64/x
  3. Step 3: Cross multiply
    13,220,869.32x = 18,245,161.50 × 7,420,010.64
  4. Step 4: Simplify right side
    13,220,869.32x = 135,379,292,458,518.36
  5. Step 5: Solve for x
    x = 135,379,292,458,518.36/13,220,869.32
  6. Step 6: Final answer
    x = 10,239,817.76

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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.