Home / 20,872.96-31,292.16-10,496.32

Finding the Fourth Proportional to 20,872.96, 31,292.16 and 10,496.32

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Solution

The fourth proportional to 20,872.96, 31,292.16 and 10,496.32 is: 15,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.96 : 31,292.16 = 10,496.32 : x
  2. Step 2: Convert to fraction form
    20,872.96/31,292.16 = 10,496.32/x
  3. Step 3: Cross multiply
    20,872.96x = 31,292.16 × 10,496.32
  4. Step 4: Simplify right side
    20,872.96x = 328,452,524.85
  5. Step 5: Solve for x
    x = 328,452,524.85/20,872.96
  6. Step 6: Final answer
    x = 15,735.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.