Home / 12,291,779.55-18,428,120-7,964,687.28

Finding the Fourth Proportional to 12,291,779.55, 18,428,120 and 7,964,687.28

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Solution

The fourth proportional to 12,291,779.55, 18,428,120 and 7,964,687.28 is: 11,940,843.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291,779.55 : 18,428,120 = 7,964,687.28 : x
  2. Step 2: Convert to fraction form
    12,291,779.55/18,428,120 = 7,964,687.28/x
  3. Step 3: Cross multiply
    12,291,779.55x = 18,428,120 × 7,964,687.28
  4. Step 4: Simplify right side
    12,291,779.55x = 146,774,212,958,313.59
  5. Step 5: Solve for x
    x = 146,774,212,958,313.59/12,291,779.55
  6. Step 6: Final answer
    x = 11,940,843.26

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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.