Home / 13,215,734.64-18,242,900.76-9,368,365.68

Finding the Fourth Proportional to 13,215,734.64, 18,242,900.76 and 9,368,365.68

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Solution

The fourth proportional to 13,215,734.64, 18,242,900.76 and 9,368,365.68 is: 12,932,021.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215,734.64 : 18,242,900.76 = 9,368,365.68 : x
  2. Step 2: Convert to fraction form
    13,215,734.64/18,242,900.76 = 9,368,365.68/x
  3. Step 3: Cross multiply
    13,215,734.64x = 18,242,900.76 × 9,368,365.68
  4. Step 4: Simplify right side
    13,215,734.64x = 170,906,165,383,629.94
  5. Step 5: Solve for x
    x = 170,906,165,383,629.94/13,215,734.64
  6. Step 6: Final answer
    x = 12,932,021.57

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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.