Home / 12,975.92-17,885.73-10,138.34

Finding the Fourth Proportional to 12,975.92, 17,885.73 and 10,138.34

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Solution

The fourth proportional to 12,975.92, 17,885.73 and 10,138.34 is: 13,974.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.92 : 17,885.73 = 10,138.34 : x
  2. Step 2: Convert to fraction form
    12,975.92/17,885.73 = 10,138.34/x
  3. Step 3: Cross multiply
    12,975.92x = 17,885.73 × 10,138.34
  4. Step 4: Simplify right side
    12,975.92x = 181,331,608.68
  5. Step 5: Solve for x
    x = 181,331,608.68/12,975.92
  6. Step 6: Final answer
    x = 13,974.48

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1.5x scale

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.