Home / 15,504.63-21,396.33-8,431.08

Finding the Fourth Proportional to 15,504.63, 21,396.33 and 8,431.08

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Solution

The fourth proportional to 15,504.63, 21,396.33 and 8,431.08 is: 11,634.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,504.63 : 21,396.33 = 8,431.08 : x
  2. Step 2: Convert to fraction form
    15,504.63/21,396.33 = 8,431.08/x
  3. Step 3: Cross multiply
    15,504.63x = 21,396.33 × 8,431.08
  4. Step 4: Simplify right side
    15,504.63x = 180,394,169.94
  5. Step 5: Solve for x
    x = 180,394,169.94/15,504.63
  6. Step 6: Final answer
    x = 11,634.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.