Home / 12,382,429.20-18,536,902.20-9,201,656.40

Finding the Fourth Proportional to 12,382,429.20, 18,536,902.20 and 9,201,656.40

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Solution

The fourth proportional to 12,382,429.20, 18,536,902.20 and 9,201,656.40 is: 13,775,181.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382,429.20 : 18,536,902.20 = 9,201,656.40 : x
  2. Step 2: Convert to fraction form
    12,382,429.20/18,536,902.20 = 9,201,656.40/x
  3. Step 3: Cross multiply
    12,382,429.20x = 18,536,902.20 × 9,201,656.40
  4. Step 4: Simplify right side
    12,382,429.20x = 170,570,204,764,804.09
  5. Step 5: Solve for x
    x = 170,570,204,764,804.09/12,382,429.20
  6. Step 6: Final answer
    x = 13,775,181.11

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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.