Home / 13,200,213.68-18,215,969.73-7,319,815.37

Finding the Fourth Proportional to 13,200,213.68, 18,215,969.73 and 7,319,815.37

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Solution

The fourth proportional to 13,200,213.68, 18,215,969.73 and 7,319,815.37 is: 10,101,164.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200,213.68 : 18,215,969.73 = 7,319,815.37 : x
  2. Step 2: Convert to fraction form
    13,200,213.68/18,215,969.73 = 7,319,815.37/x
  3. Step 3: Cross multiply
    13,200,213.68x = 18,215,969.73 × 7,319,815.37
  4. Step 4: Simplify right side
    13,200,213.68x = 133,337,535,118,028.91
  5. Step 5: Solve for x
    x = 133,337,535,118,028.91/13,200,213.68
  6. Step 6: Final answer
    x = 10,101,164.91

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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.