Home / 20,987.51-31,481.54-6,196.64

Finding the Fourth Proportional to 20,987.51, 31,481.54 and 6,196.64

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Solution

The fourth proportional to 20,987.51, 31,481.54 and 6,196.64 is: 9,295.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.51 : 31,481.54 = 6,196.64 : x
  2. Step 2: Convert to fraction form
    20,987.51/31,481.54 = 6,196.64/x
  3. Step 3: Cross multiply
    20,987.51x = 31,481.54 × 6,196.64
  4. Step 4: Simplify right side
    20,987.51x = 195,079,864.22
  5. Step 5: Solve for x
    x = 195,079,864.22/20,987.51
  6. Step 6: Final answer
    x = 9,295.04

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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.