Home / 13,620,579.12-18,795,489.28-7,818,555.60

Finding the Fourth Proportional to 13,620,579.12, 18,795,489.28 and 7,818,555.60

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Solution

The fourth proportional to 13,620,579.12, 18,795,489.28 and 7,818,555.60 is: 10,789,084.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620,579.12 : 18,795,489.28 = 7,818,555.60 : x
  2. Step 2: Convert to fraction form
    13,620,579.12/18,795,489.28 = 7,818,555.60/x
  3. Step 3: Cross multiply
    13,620,579.12x = 18,795,489.28 × 7,818,555.60
  4. Step 4: Simplify right side
    13,620,579.12x = 146,953,577,964,883.97
  5. Step 5: Solve for x
    x = 146,953,577,964,883.97/13,620,579.12
  6. Step 6: Final answer
    x = 10,789,084.42

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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.