Home / 20,864.72-31,297.20-5,282.32

Finding the Fourth Proportional to 20,864.72, 31,297.20 and 5,282.32

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Solution

The fourth proportional to 20,864.72, 31,297.20 and 5,282.32 is: 7,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.72 : 31,297.20 = 5,282.32 : x
  2. Step 2: Convert to fraction form
    20,864.72/31,297.20 = 5,282.32/x
  3. Step 3: Cross multiply
    20,864.72x = 31,297.20 × 5,282.32
  4. Step 4: Simplify right side
    20,864.72x = 165,321,825.50
  5. Step 5: Solve for x
    x = 165,321,825.50/20,864.72
  6. Step 6: Final answer
    x = 7,923.51

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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.