Home / 12,921.22-19,469.75-10,632.56

Finding the Fourth Proportional to 12,921.22, 19,469.75 and 10,632.56

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Solution

The fourth proportional to 12,921.22, 19,469.75 and 10,632.56 is: 16,021.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.22 : 19,469.75 = 10,632.56 : x
  2. Step 2: Convert to fraction form
    12,921.22/19,469.75 = 10,632.56/x
  3. Step 3: Cross multiply
    12,921.22x = 19,469.75 × 10,632.56
  4. Step 4: Simplify right side
    12,921.22x = 207,013,194.36
  5. Step 5: Solve for x
    x = 207,013,194.36/12,921.22
  6. Step 6: Final answer
    x = 16,021.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.