Home / 15,170.32-20,935.16-8,456.37

Finding the Fourth Proportional to 15,170.32, 20,935.16 and 8,456.37

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Solution

The fourth proportional to 15,170.32, 20,935.16 and 8,456.37 is: 11,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170.32 : 20,935.16 = 8,456.37 : x
  2. Step 2: Convert to fraction form
    15,170.32/20,935.16 = 8,456.37/x
  3. Step 3: Cross multiply
    15,170.32x = 20,935.16 × 8,456.37
  4. Step 4: Simplify right side
    15,170.32x = 177,035,369.89
  5. Step 5: Solve for x
    x = 177,035,369.89/15,170.32
  6. Step 6: Final answer
    x = 11,669.85

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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.