Home / 21,255.21-31,884.62-6,464.25

Finding the Fourth Proportional to 21,255.21, 31,884.62 and 6,464.25

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Solution

The fourth proportional to 21,255.21, 31,884.62 and 6,464.25 is: 9,696.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.21 : 31,884.62 = 6,464.25 : x
  2. Step 2: Convert to fraction form
    21,255.21/31,884.62 = 6,464.25/x
  3. Step 3: Cross multiply
    21,255.21x = 31,884.62 × 6,464.25
  4. Step 4: Simplify right side
    21,255.21x = 206,110,122.51
  5. Step 5: Solve for x
    x = 206,110,122.51/21,255.21
  6. Step 6: Final answer
    x = 9,696.92

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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.