Home / 21,431.39-32,151.33-6,644.84

Finding the Fourth Proportional to 21,431.39, 32,151.33 and 6,644.84

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Solution

The fourth proportional to 21,431.39, 32,151.33 and 6,644.84 is: 9,968.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.39 : 32,151.33 = 6,644.84 : x
  2. Step 2: Convert to fraction form
    21,431.39/32,151.33 = 6,644.84/x
  3. Step 3: Cross multiply
    21,431.39x = 32,151.33 × 6,644.84
  4. Step 4: Simplify right side
    21,431.39x = 213,640,282.88
  5. Step 5: Solve for x
    x = 213,640,282.88/21,431.39
  6. Step 6: Final answer
    x = 9,968.57

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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.