Home / 12,219,020.30-18,301,958.40-7,418,336.60

Finding the Fourth Proportional to 12,219,020.30, 18,301,958.40 and 7,418,336.60

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Solution

The fourth proportional to 12,219,020.30, 18,301,958.40 and 7,418,336.60 is: 11,111,372.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219,020.30 : 18,301,958.40 = 7,418,336.60 : x
  2. Step 2: Convert to fraction form
    12,219,020.30/18,301,958.40 = 7,418,336.60/x
  3. Step 3: Cross multiply
    12,219,020.30x = 18,301,958.40 × 7,418,336.60
  4. Step 4: Simplify right side
    12,219,020.30x = 135,770,087,850,397.42
  5. Step 5: Solve for x
    x = 135,770,087,850,397.42/12,219,020.30
  6. Step 6: Final answer
    x = 11,111,372.64

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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.